248 relations: Ab urbe condita, Acoreus, Adoption of the Gregorian calendar, Alexandria, Ancient Macedonian calendar, Annianus of Alexandria, Anno Domini, Anno Mundi, Annunciation, Antoninus Pius, April, Aprilis, Armenian Apostolic Church, Asia (Roman province), Attic calendar, August, Augustus, Battle of Thapsus, Bede, Berber calendar, Berbers, British Empire, Bulgarian Orthodox Church, Byzantine calendar, Byzantine Empire, Calendar (New Style) Act 1750, Calendar era, Caligula, Callippic cycle, Callippus, Catholic Church, Censorinus, Charlemagne, Christian denomination, Christian Ludwig Ideler, Church of Cyprus, Church of Greece, Cicero, Civil calendar, Claudius, Cleopatra, Cleostratus, Coligny calendar, Commodus, Computus, Constans II, Constantinople, Conversion between Julian and Gregorian calendars, Coptic calendar, Coptic Orthodox Church of Alexandria, ..., Croatian months, Czech months, December, December (Roman month), Decree of Canopus, Denmark–Norway, Dictionary of Greek and Roman Antiquities, Digest (Roman law), Diocletian, Dionysius Exiguus, Dominical letter, Domitian, Dual dating, Duchy of Lorraine, Dutch Republic, Easter, Eastern Europe, Eastern Orthodox Church, Ecumenical Patriarchate of Constantinople, Edict of Roussillon, Egyptian calendar, Epiphany (holiday), Epoch (reference date), Equinox, Era of the Martyrs, Estonian Apostolic Orthodox Church, Ethiopia, Ethiopian calendar, Ethiopian Orthodox Tewahedo Church, Eudoxus of Cnidus, Fasti, Faustina the Elder, Februarius, February, Finnish Orthodox Church, First Council of Nicaea, Fixed feast, Floralia, Founding of Rome, France, Gaius (jurist), Georgian calendar, Georgian Orthodox Church, Germanic calendar, Germanicus, Grand Duchy of Tuscany, Great feasts in the Eastern Orthodox Church, Greek Old Calendarists, Greek Orthodox Church of Antioch, Greek Orthodox Church of Jerusalem, Greek Orthodox Patriarchate of Alexandria and all Africa, Gregorian calendar, Heinrich Bünting, Heraclius, Hipparchus, History of Christianity in Ukraine, Holland, Holy Roman Empire, Holy water in Eastern Christianity, Ianuarius, Indiction, Institut de mécanique céleste et de calcul des éphémérides, Intercalation (timekeeping), Islamic calendar, Iunius (month), Ivan III of Russia, J, Jakob Christmann, January, January 6 (Eastern Orthodox liturgics), Jerusalem, Jesus, Johannes de Sacrobosco, Johannes Kepler, John James Bond, Joseph Justus Scaliger, Julian day, Julian year (astronomy), Julius Caesar, July, June, Justinian I, Justinian II, Kingdom of Scotland, Leap year, Lent, Leo VI the Wise, List of adoption dates of the Gregorian calendar per country, List of Roman civil wars and revolts, Liturgical year, Livia, Lucan, Macedonian months, Macedonian Orthodox Church – Ohrid Archbishopric, Macrobius, Maius, March, Marcus Claudius Tacitus, Marcus Terentius Varro, Mark Antony, Martius (month), May, Mercedonius, Metonic cycle, Middle Ages, Montenegrin Orthodox Church, Mount Athos, Moveable feast, Nabataean Kingdom, Nativity of Jesus, Nero, New Year's Day, November, November (Roman month), Nowruz, Nundinae, Octaeteris, October, October (Roman month), October Revolution, Official, Old Calendarists, Old Style and New Style dates, Oriental Orthodoxy, Orthodox Church in America, Orthodox Church in America Bulgarian Diocese, Orthodoxy, Ottoman Empire, Parilia, Paris Observatory, Passion of Jesus, Paullus Fabius Maximus, Pharsalia, Pliny the Elder, Plutarch, Polish Orthodox Church, Pontifex maximus, Pope Gregory XIII, Popular Astronomy (US magazine), Portugal, Procession, Proleptic Gregorian calendar, Proleptic Julian calendar, Prosper of Aquitaine, Prussia, Publius Juventius Celsus, Quintilis, Red deer, Regifugium, Regnal year, Renaissance, Republic of Venice, Revised Julian calendar, Roman calendar, Roman timekeeping, Romanian months, Romanian Orthodox Church, Rumi calendar, Russia, Russian Orthodox Church, Russian Orthodox Church Outside Russia, Second Punic War, Senatus consultum, September, September (Roman month), Serbia, Serbian Orthodox Church, Sextilis, Shoshenq I, Slavic calendar, Slovene months, Solar calendar, Solstice, Sosigenes of Alexandria, Southeast Europe, Southern Netherlands, Spain, Spanish era, State religion, Sweden, Swedish calendar, Synod, Terminus (god), Theodor Mommsen, Thomas Harriot, Tiberius, Tropical year, Turkey, Undecimber, United States, United States Naval Observatory, Vladimir the Great, Week, Western Europe, William Smith (lexicographer), Winter solstice, Year, Zeeland. Expand index (198 more) » « Shrink index
Ab urbe condita or Anno urbis conditae (abbreviated: A.U.C. or AUC) is a convention that was used in antiquity and by classical historians to refer to a given year in Ancient Rome.
Acoreus was an Egyptian wise man consulted by Julius Caesar, according to the Roman writer Lucan, asking him many questions about ancient Egypt’s history and its calendar, but says he would like nothing as much as hearing the cause of the flooding of the Nile and to see its source.
The adoption of the Gregorian Calendar was an event in the modern history of most nations and societies, marking a change from their traditional (or old style) dating system to the modern (or new style) dating system that is widely used around the world today.
Alexandria (or; Arabic: الإسكندرية; Egyptian Arabic: إسكندرية; Ⲁⲗⲉⲝⲁⲛⲇⲣⲓⲁ; Ⲣⲁⲕⲟⲧⲉ) is the second-largest city in Egypt and a major economic centre, extending about along the coast of the Mediterranean Sea in the north central part of the country.
The Ancient Macedonian calendar is a lunisolar calendar that was in use in ancient Macedon in the 1st millennium BC.
Annianus of Alexandria (Annianos) was a monk who flourished in Alexandria during the bishopric of Theophilus of Alexandria around the beginning of the fifth century. He criticized the world history of his contemporary monk Panodorus of Alexandria for relying too much on secular sources rather than biblical sources for his dates. As a result, Annianus developed his own chronology which placed Creation on 25 March 5492 BC. This created the Alexandrian Era whose first day was the first day of the proleptic Alexandrian civil year in progress, 29 August 5493 BC. This year was eleven Paschal cycles of 532 years each before the Alexandrian year beginning 29 August 360, which itself was four 19-year cycles after the epoch of the Diocletian Era on 29 August 284. The former is known as the Era of Grace in the Coptic Church, whereas the latter is known as the Era of Martyrs. He was the first computist to recognize the 532-year cycle of Easters in the Julian calendar. This cycle is often attributed to Victorius of Aquitaine in 457, the first to recognize such a cycle in the West. None of Annianus's writings have survived. He is principally known from the discussion of his works by George Syncellus during the 9th century, though lesser fragments appear elsewhere. Elijah of Nisibis cites him in his 11th-century Chronography.
The terms anno Domini (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars.
Anno Mundi (Latin for "in the year of the world"; Hebrew:, "to the creation of the world"), abbreviated as AM or A.M., or Year After Creation, is a calendar era based on the biblical accounts of the creation of the world and subsequent history.
The Annunciation (from Latin annuntiatio), also referred to as the Annunciation to the Blessed Virgin Mary, the Annunciation of Our Lady, or the Annunciation of the Lord, is the Christian celebration of the announcement by the angel Gabriel to the Virgin Mary that she would conceive and become the mother of Jesus, the Son of God, marking his Incarnation.
Antoninus Pius (Titus Aelius Hadrianus Antoninus Augustus Pius; 19 September 867 March 161 AD), also known as Antoninus, was Roman emperor from 138 to 161.
April is the fourth month of the year in the Gregorian calendar, the fifth in the early Julian, the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days.
Aprilis or mensis Aprilis (April) was the fourth month of the ancient Roman calendar, following Martius (March) and preceding Maius (May).
The Armenian Apostolic Church (translit) is the national church of the Armenian people.
The Roman province of Asia or Asiana (Ἀσία or Ἀσιανή), in Byzantine times called Phrygia, was an administrative unit added to the late Republic.
The Attic calendar or Athenian calendar is the calendar that was in use in ancient Attica, the ancestral territory of the Athenian polis.
August is the eighth month of the year in the Julian and Gregorian calendars, and the fifth of seven months to have a length of 31 days.
Augustus (Augustus; 23 September 63 BC – 19 August 14 AD) was a Roman statesman and military leader who was the first Emperor of the Roman Empire, controlling Imperial Rome from 27 BC until his death in AD 14.
The Battle of Thapsus was an engagement in Caesar's Civil War that took place on April 6, 46 BC near Thapsus (in modern Tunisia).
Bede (italic; 672/3 – 26 May 735), also known as Saint Bede, Venerable Bede, and Bede the Venerable (Bēda Venerābilis), was an English Benedictine monk at the monastery of St.
The Berber calendar is the agricultural calendar traditionally used by Berbers.
Berbers or Amazighs (Berber: Imaziɣen, ⵉⵎⴰⵣⵉⵗⴻⵏ; singular: Amaziɣ, ⴰⵎⴰⵣⵉⵗ) are an ethnic group indigenous to North Africa, primarily inhabiting Algeria, northern Mali, Mauritania, Morocco, northern Niger, Tunisia, Libya, and a part of western Egypt.
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom and its predecessor states.
The Bulgarian Orthodox Church (Българска православна църква, Balgarska pravoslavna tsarkva) is an autocephalous Orthodox Church.
The Byzantine calendar, also called "Creation Era of Constantinople" or "Era of the World" (Ἔτη Γενέσεως Κόσμου κατὰ Ῥωμαίους, also Ἔτος Κτίσεως Κόσμου or Ἔτος Κόσμου, abbreviated as ε.Κ.), was the calendar used by the Eastern Orthodox Church from c. 691 to 1728 in the Ecumenical Patriarchate.
The Byzantine Empire, also referred to as the Eastern Roman Empire and Byzantium, was the continuation of the Roman Empire in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinople (modern-day Istanbul, which had been founded as Byzantium).
The Calendar (New Style) Act 1750 (c.23) (also known as Chesterfield's Act after Philip Stanhope, 4th Earl of Chesterfield) was an Act of the Parliament of Great Britain.
A calendar era is the year numbering system used by a calendar.
Caligula (Latin: Gaius Julius Caesar Augustus Germanicus; 31 August 12 – 24 January 41 AD) was Roman emperor from AD 37 to AD 41.
For astronomy and calendar studies, the Callippic cycle (or Calippic) is a particular approximate common multiple of the year (specifically the tropical year) and the synodic month, that was proposed by Callippus during 330 BC.
Callippus (Κάλλιππος; c. 370 BC – c. 300 BC) was a Greek astronomer and mathematician.
The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with more than 1.299 billion members worldwide.
Censorinus was a Roman grammarian and miscellaneous writer from the 3rd century AD.
Charlemagne or Charles the Great (Karl der Große, Carlo Magno; 2 April 742 – 28 January 814), numbered Charles I, was King of the Franks from 768, King of the Lombards from 774, and Holy Roman Emperor from 800.
A Christian denomination is a distinct religious body within Christianity, identified by traits such as a name, organisation, leadership and doctrine.
Christian Ludwig Ideler (21 September 1766 – 10 August 1846) was a German chronologist and astronomer.
The Church of Cyprus (Ἐκκλησία τῆς Κύπρου) is one of the autocephalous Churches that together form the communion of the Eastern Orthodox Church.
The Church of Greece (Ἐκκλησία τῆς Ἑλλάδος, Ekklisía tis Elládos), part of the wider Greek Orthodox Church, is one of the autocephalous churches which make up the communion of Orthodox Christianity.
Marcus Tullius Cicero (3 January 106 BC – 7 December 43 BC) was a Roman statesman, orator, lawyer and philosopher, who served as consul in the year 63 BC.
The civil calendar is the calendar, or possibly one of several calendars, used within a country for civil, official or administrative purposes.
Claudius (Tiberius Claudius Caesar Augustus Germanicus; 1 August 10 BC – 13 October 54 AD) was Roman emperor from 41 to 54.
Cleopatra VII Philopator (Κλεοπάτρα Φιλοπάτωρ Cleopatra Philopator; 69 – August 10 or 12, 30 BC)Theodore Cressy Skeat, in, uses historical data to calculate the death of Cleopatra as having occurred on 12 August 30 BC.
Cleostratus (Κλεόστρατος; b. c. 520 BC; d. possibly 432 BC) was an astronomer of ancient Greece.
The Coligny calendar is a Gaulish peg calendar or ''parapegma'' made in Roman Gaul in the 2nd century, giving a five-year cycle of a lunisolar calendar with intercalary months.
Commodus (31 August 161– 31 December 192AD), born Lucius Aurelius Commodus and died Lucius Aelius Aurelius Commodus, was Roman emperor with his father Marcus Aurelius from177 to his father's death in 180, and solely until 192.
Computus (Latin for "computation") is a calculation that determines the calendar date of Easter.
Constans II (Κώνστας Β', Kōnstas II; Heraclius Constantinus Augustus or Flavius Constantinus Augustus; 7 November 630 – 15 September 668), also called Constantine the Bearded (Κωνσταντῖνος ὁ Πωγωνάτος Kōnstantinos ho Pogonatos), was emperor of the Byzantine Empire from 641 to 668.
Constantinople (Κωνσταντινούπολις Konstantinoúpolis; Constantinopolis) was the capital city of the Roman/Byzantine Empire (330–1204 and 1261–1453), and also of the brief Latin (1204–1261), and the later Ottoman (1453–1923) empires.
The tables below list equivalent dates in the Julian and Gregorian calendars.
The Coptic calendar, also called the Alexandrian calendar, is a liturgical calendar that was used by the Coptic Orthodox Church and is still used in Egypt.
The Coptic Orthodox Church of Alexandria (Coptic: Ϯⲉⲕ̀ⲕⲗⲏⲥⲓⲁ ̀ⲛⲣⲉⲙ̀ⲛⲭⲏⲙⲓ ⲛⲟⲣⲑⲟⲇⲟⲝⲟⲥ, ti.eklyseya en.remenkimi en.orthodoxos, literally: the Egyptian Orthodox Church) is an Oriental Orthodox Christian church based in Egypt, Northeast Africa and the Middle East.
The Croatian months used with the Gregorian calendar by Croats differ from the original Latin month names: Some names are derived from archaic Croatian-Slavic words that are no longer found in standard Croatian dictionaries.
The names of Czech months are, as in Polish, Croatian, Ukrainian and Belarusian not based on the Latin names used in most European languages.
December is the twelfth and final month of the year in the Julian and Gregorian Calendars and is the seventh and last of seven months to have a length of 31 days.
December (from Latin decem, "ten") or mensis December was originally the tenth month of the Roman calendar, following November (novem, "nine") and preceding Ianuarius.
The Decree of Canopus is a trilingual inscription in three scripts, which dates from the Ptolemaic period of Ancient Egypt.
Denmark–Norway (Danish and Norwegian: Danmark–Norge or Danmark–Noreg; also known as the Oldenburg Monarchy or the Oldenburg realms) was an early modern multi-national and multi-lingual real unionFeldbæk 1998:11 consisting of the Kingdom of Denmark, the Kingdom of Norway (including Norwegian overseas possessions the Faroe Islands, Iceland, Greenland, et cetera), the Duchy of Schleswig, and the Duchy of Holstein.
A Dictionary of Greek and Roman Antiquities is an English language encyclopedia first published in 1842.
The Digest, also known as the Pandects (Digesta seu Pandectae, adapted from πανδέκτης pandéktēs, "all-containing"), is a name given to a compendium or digest of juristic writings on Roman law compiled by order of the Eastern Roman emperor Justinian I in the 6th century CE (530–533).
Diocletian (Gaius Aurelius Valerius Diocletianus Augustus), born Diocles (22 December 244–3 December 311), was a Roman emperor from 284 to 305.
Dionysius Exiguus (Latin for "Dionysius the Humble"; –) was a 6th-century monk born in Scythia Minor (probably modern Dobruja, in Romania and Bulgaria).
Dominical letters or Sunday letters are a method used to determine the day of the week for particular dates.
Domitian (Titus Flavius Caesar Domitianus Augustus; 24 October 51 – 18 September 96 AD) was Roman emperor from 81 to 96.
Dual dating is the practice, in historical materials, to indicate some dates with what appears to be duplicate, or excessive digits, sometimes separated by a hyphen or a slash.
The Duchy of Lorraine (Lorraine; Lothringen), originally Upper Lorraine, was a duchy now included in the larger present-day region of Lorraine in northeastern France.
The Dutch Republic was a republic that existed from the formal creation of a confederacy in 1581 by several Dutch provinces (which earlier seceded from the Spanish rule) until the Batavian Revolution in 1795.
Easter,Traditional names for the feast in English are "Easter Day", as in the Book of Common Prayer, "Easter Sunday", used by James Ussher and Samuel Pepys and plain "Easter", as in books printed in,, also called Pascha (Greek, Latin) or Resurrection Sunday, is a festival and holiday celebrating the resurrection of Jesus from the dead, described in the New Testament as having occurred on the third day of his burial after his crucifixion by the Romans at Calvary 30 AD.
Eastern Europe is the eastern part of the European continent.
The Eastern Orthodox Church, also known as the Orthodox Church, or officially as the Orthodox Catholic Church, is the second-largest Christian Church, with over 250 million members.
The Ecumenical Patriarchate of Constantinople (Οἰκουμενικόν Πατριαρχεῖον Κωνσταντινουπόλεως, Oikoumenikón Patriarkhíon Konstantinoupóleos,; Patriarchatus Oecumenicus Constantinopolitanus; Rum Ortodoks Patrikhanesi, "Roman Orthodox Patriarchate") is one of the fourteen autocephalous churches (or "jurisdictions") that together compose the Eastern Orthodox Church.
The Edict of Roussillon (Édit de Roussillon) was a 1564 edict decreeing that the year would begin on January 1 in France.
The ancient Egyptian calendar was a solar calendar with a 365-day year.
Epiphany, also Theophany, Little Christmas, or Three Kings' Day, is a Christian feast day that celebrates the revelation of God incarnate as Jesus Christ.
In the fields of chronology and periodization, an epoch is an instant in time chosen as the origin of a particular era.
An equinox is commonly regarded as the moment the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 22-23 September.
The Era of the Martyrs (anno martyrum), also known as the Diocletian era (anno Diocletiani), is a method of numbering years used by the Church of Alexandria beginning in the 4th centuryAD and by the Coptic Orthodox Church of Alexandria from the 5th century to the present.
The Estonian Apostolic Orthodox Church (Eesti Apostlik-Õigeusu Kirik) is an autonomous Orthodox church whose primate is confirmed by the Ecumenical Patriarch of Constantinople.
Ethiopia (ኢትዮጵያ), officially the Federal Democratic Republic of Ethiopia (የኢትዮጵያ ፌዴራላዊ ዲሞክራሲያዊ ሪፐብሊክ, yeʾĪtiyoṗṗya Fēdēralawī Dēmokirasīyawī Rīpebilīk), is a country located in the Horn of Africa.
The Ethiopian calendar (የኢትዮጵያ ዘመን አቆጣጠር; yä'Ityoṗṗya zämän aḳoṭaṭär) is the principal calendar used in Ethiopia and also serves as the liturgical year for Christians in Eritrea and Ethiopia belonging to the Eritrean Orthodox Tewahedo Church, Ethiopian Orthodox Tewahedo Church, Eastern Catholic Churches and Coptic Orthodox Church of Alexandria.
The Ethiopian Orthodox Tewahedo Church (የኢትዮጵያ:ኦርቶዶክስ:ተዋሕዶ:ቤተ:ክርስቲያን; Yäityop'ya ortodoks täwahedo bétäkrestyan) is the largest of the Oriental Orthodox Christian Churches.
Eudoxus of Cnidus (Εὔδοξος ὁ Κνίδιος, Eúdoxos ho Knídios) was an ancient Greek astronomer, mathematician, scholar, and student of Archytas and Plato.
In ancient Rome, the fasti (Latin plural) were chronological or calendar-based lists, or other diachronic records or plans of official and religiously sanctioned events.
Annia Galeria Faustina, sometimes referred to as Faustina I (Latin: Faustina Major; born on February 16 around 100 CE; died in October or November of 140 CE), was a Roman empress and wife of the Roman emperor Antoninus Pius.
Februarius or February, fully the "February month" (mensis Februarius), was the shortest month of the Roman calendar.
February is the second and shortest month of the year in the Julian and Gregorian calendar with 28 days in common years and 29 days in leap years, with the quadrennial 29th day being called the leap day.
The Finnish Orthodox Church (Suomen ortodoksinen kirkko; Finska Ortodoxa Kyrkan), or Orthodox Church of Finland, is an autonomous Eastern Orthodox archdiocese of the Ecumenical Patriarchate of Constantinople.
The First Council of Nicaea (Νίκαια) was a council of Christian bishops convened in the Bithynian city of Nicaea (now İznik, Bursa province, Turkey) by the Roman Emperor Constantine I in AD 325.
A fixed feast is an annual celebration that is held on the same calendar date every year, such as Christmas, as distinguished from moveable feasts, such as Easter, whose calendar date varies.
The Floralia was a festival in ancient Roman religious practice in honor of the goddess Flora, held April 27 during the Republican era, or April 28 in the Julian calendar.
The founding of Rome can be investigated through archaeology, but traditional stories handed down by the ancient Romans themselves explain the earliest history of their city in terms of legend and myth.
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
Gaius (fl. AD 130–180) was a celebrated Roman jurist.
The Georgian calendar (ქართული კალენდარი) is the ancient or modern calendar of Georgia.
The Georgian Apostolic Autocephalous Orthodox Church (საქართველოს სამოციქულო ავტოკეფალური მართლმადიდებელი ეკლესია, sakartvelos samotsikulo avt’ok’epaluri martlmadidebeli ek’lesia) is an autocephalous Eastern Orthodox Church in full communion with the other churches of Eastern Orthodoxy.
The Germanic calendars were the regional calendars used amongst the early Germanic peoples, prior to the adoption of the Julian calendar in the Early Middle Ages.
Germanicus (Latin: Germanicus Julius Caesar; 24 May 15 BC – 10 October AD 19) was a member of the Julio-Claudian dynasty and a prominent general of the Roman Empire, who was known for his campaigns in Germania.
The Grand Duchy of Tuscany (Granducato di Toscana, Magnus Ducatus Etruriae) was a central Italian monarchy that existed, with interruptions, from 1569 to 1859, replacing the Duchy of Florence.
In the Eastern Orthodox Church, the feast of the Resurrection of Jesus, called Pascha (Easter), is the greatest of all holy days and as such it is called the "feast of feasts".
Greek Old Calendarists (Greek: Παλαιοημερολογίτες, Paleoimerologites), sometimes abbreviated as GOC ("Genuine Orthodox Christians"), are groups of Old Calendarist Orthodox Christians that remained committed to the traditional Orthodox practice and are not in communion with many other Orthodox churches such as the Orthodox Church of Greece, the Patriarchate of Constantinople, or the Church of Cyprus.
The Greek Orthodox Church of Antioch, also known as the Antiochian Orthodox Church (Πατριαρχεῖον Ἀντιοχείας, Patriarcheîon Antiocheías; بطريركية أنطاكية وسائر المشرق للروم الأرثوذكس, Baṭriyarkiyya Anṭākiya wa-Sāʾir al-Mashriq li'l-Rūm al-Urthūdhuks), is an autocephalous Greek Orthodox Church within the wider communion of Eastern Orthodox Christianity.
The Eastern Orthodox Patriarchate of Jerusalem (Πατριαρχεῖον Ἱεροσολύμων, Patriarcheîon Hierosolýmōn) or Greek Orthodox Patriarchate of Jerusalem (كنيسة الروم الأرثوذكس في القدس Kanisatt Ar-rum al-Urtudoks fi al-Quds, literally Rûm/Roman Orthodox Church of Jerusalem), and officially called simply the Patriarchate of Jerusalem, is an autocephalous Church within the wider communion of Eastern Orthodox Christianity.
The Greek Orthodox Patriarchate of Alexandria and all Africa (Greek: Πατριαρχεῖον Ἀλεξανδρείας καὶ πάσης Ἀφρικῆς, Patriarcheîon Alexandreías kaì pásēs Aphrikês) is an autocephalous Byzantine Rite jurisdiction of the Eastern Orthodox Church, having the African continent as its canonical territory.
The Gregorian calendar is the most widely used civil calendar in the world.
Heinrich Bünting (1545 – 1606) was a Protestant pastor and theologian.
Heraclius (Flavius Heracles Augustus; Flavios Iraklios; c. 575 – February 11, 641) was the Emperor of the Byzantine (Eastern Roman) Empire from 610 to 641.
Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.
The history of Christianity in Ukraine dates back to the earliest centuries of the apostolic church and according to Radziwiłł Chronicle Saint Andrew has ascended on hills of the future city of Kiev.
Holland is a region and former province on the western coast of the Netherlands.
The Holy Roman Empire (Sacrum Romanum Imperium; Heiliges Römisches Reich) was a multi-ethnic but mostly German complex of territories in central Europe that developed during the Early Middle Ages and continued until its dissolution in 1806.
Among Eastern Orthodox and Eastern-Rite Catholic Christians, holy water is used frequently in rites of blessing and exorcism, and the water for baptism is always sanctified with a special blessing.
Ianuarius, fully Mensis Ianuarius (Latin for the "January Month", i.e., "The Month of Janus"), was the first month of the ancient Roman calendar, from which the Julian and Gregorian month of January derived.
An indiction is any of the years in a 15-year cycle used to date medieval documents throughout Europe, both East and West.
The Institut de mécanique céleste et de calcul des éphémérides (IMCCE) was founded in 1998 and replaced the Service des calculs et de mécanique céleste of the Bureau des Longitudes.
Intercalation or embolism in timekeeping is the insertion of a leap day, week, or month into some calendar years to make the calendar follow the seasons or moon phases.
The Islamic, Muslim, or Hijri calendar (التقويم الهجري at-taqwīm al-hijrī) is a lunar calendar consisting of 12 months in a year of 354 or 355 days.
On the ancient Roman calendar, mensis Iunius or Iunius, also Junius (June), was the fourth month, following Maius (May).
Ivan III Vasilyevich (Иван III Васильевич; 22 January 1440, Moscow – 27 October 1505, Moscow), also known as Ivan the Great, was a Grand Prince of Moscow and Grand Prince of all Rus'.
J is the tenth letter in the modern English alphabet and the ISO basic Latin alphabet.
Jakob Christmann (born November 1554 in Johannisberg (Rheingau), Geisenheim – 16 June 1613 in Heidelberg) was a German Orientalist who also studied problems of astronomy.
January is the first month of the year in the Julian and Gregorian calendars and the first of seven months to have a length of 31 days.
January 5 - Eastern Orthodox liturgical calendar - January 7 All fixed commemorations below are observed on January 19 by Eastern Orthodox Churches on the Old Calendar.
Jerusalem (יְרוּשָׁלַיִם; القُدس) is a city in the Middle East, located on a plateau in the Judaean Mountains between the Mediterranean and the Dead Sea.
Jesus, also referred to as Jesus of Nazareth and Jesus Christ, was a first-century Jewish preacher and religious leader.
Johannes de Sacrobosco, also written Ioannis de Sacro Bosco (1195 – 1256), was a scholar, monk and astronomer who was a teacher at the University of Paris.
Johannes Kepler (December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer.
John James Bond (9 December 1819 – 9 December 1883) was an English chronologist, who served in the record office of Queen Victoria.
Joseph Justus Scaliger (5 August 1540 – 21 January 1609) was a French religious leader and scholar, known for expanding the notion of classical history from Greek and ancient Roman history to include Persian, Babylonian, Jewish and ancient Egyptian history.
Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.
In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.
Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC), known by his cognomen Julius Caesar, was a Roman politician and military general who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.
July is the seventh month of the year (between June and August) in the Julian and Gregorian Calendars and the fourth of seven months to have a length of 31 days.
June is the sixth month of the year in the Julian and Gregorian calendars, the second of four months to have a length of 30 days, and the third of five months to have a length of less than 31 days.
Justinian I (Flavius Petrus Sabbatius Iustinianus Augustus; Flávios Pétros Sabbátios Ioustinianós; 482 14 November 565), traditionally known as Justinian the Great and also Saint Justinian the Great in the Eastern Orthodox Church, was the Eastern Roman emperor from 527 to 565.
Justinian II (Ἰουστινιανός Β΄, Ioustinianos II; Flavius Iustinianus Augustus; 668 – 11 December 711), surnamed the Rhinotmetos or Rhinotmetus (ὁ Ῥινότμητος, "the slit-nosed"), was the last Byzantine Emperor of the Heraclian Dynasty, reigning from 685 to 695 and again from 705 to 711.
The Kingdom of Scotland (Rìoghachd na h-Alba; Kinrick o Scotland) was a sovereign state in northwest Europe traditionally said to have been founded in 843.
A leap year (also known as an intercalary year or bissextile year) is a calendar year containing one additional day (or, in the case of lunisolar calendars, a month) added to keep the calendar year synchronized with the astronomical or seasonal year.
Lent (Latin: Quadragesima: Fortieth) is a solemn religious observance in the Christian liturgical calendar that begins on Ash Wednesday and ends approximately six weeks later, before Easter Sunday.
Leo VI, called the Wise or the Philosopher (Λέων ΣΤ΄ ὁ Σοφός, Leōn VI ho Sophos, 19 September 866 – 11 May 912), was Byzantine Emperor from 886 to 912.
This is a list of adoption dates of the Gregorian calendar per country.
This is a list of civil wars and organized civil unrest in ancient Rome (753 BC – AD 476).
The liturgical year, also known as the church year or Christian year, as well as the kalendar, consists of the cycle of liturgical seasons in Christian churches that determines when feast days, including celebrations of saints, are to be observed, and which portions of Scripture are to be read either in an annual cycle or in a cycle of several years.
Livia Drusilla (Classical Latin: Livia•Drvsilla, Livia•Avgvsta) (30 January 58 BC – 28 September 29 AD), also known as Julia Augusta after her formal adoption into the Julian family in AD 14, was the wife of the Roman emperor Augustus throughout his reign, as well as his adviser.
Marcus Annaeus Lucanus (November 3, 39 AD – April 30, 65 AD), better known in English as Lucan, was a Roman poet, born in Corduba (modern-day Córdoba), in Hispania Baetica.
The Macedonian language has two sets of names of the months of the Gregorian calendar.
The Macedonian Orthodox Church – Ohrid Archbishopric (MOC-OA; Македонска православна црква – Охридска архиепископија (МПЦ-ОА), tr. Makedonska pravoslavna crkva – Ohridska arhiepiskopija (MPC-OA)), or simply the Macedonian Orthodox Church (MOC; Македонска православна црква (МПЦ), tr. Makedonska pravoslavna crkva (MPC)), is the largest body of Christians in the Republic of Macedonia who are united under the Archbishop of Ohrid and Macedonia.
Macrobius, fully Macrobius Ambrosius Theodosius, also known as Theodosius, was a Roman provincial who lived during the early fifth century, at the transition of the Roman to the Byzantine Empire, and when Latin was as widespread as Greek among the elite.
Maius or mensis Maius (May) was the third month of the ancient Roman calendar, following Aprilis (April) and preceding Iunius (June).
March is the third month of the year in both the Julian and Gregorian calendars.
Tacitus (Marcus Claudius Tacitus Augustus;Jones, pg. 873 c. 200 – June 276), was Roman Emperor from 275 to 276.
Marcus Terentius Varro (116 BC – 27 BC) was an ancient Roman scholar and writer.
Marcus Antonius (Latin:; 14 January 1 August 30 BC), commonly known in English as Mark Antony or Marc Antony, was a Roman politician and general who played a critical role in the transformation of the Roman Republic from an oligarchy into the autocratic Roman Empire.
Martius or mensis Martius ("March") was the first month of the ancient Roman year until possibly as late as 153 BC.
May is the fifth month of the year in the Julian and Gregorian Calendars and the third of seven months to have a length of 31 days.
Mercedonius or Mercedinus (Latin for "Work Month"),.
For astronomy and calendar studies, the Metonic cycle or Enneadecaeteris (from ἐννεακαιδεκαετηρίς, "nineteen years") is a period of very close to 19 years that is nearly a common multiple of the solar year and the synodic (lunar) month.
In the history of Europe, the Middle Ages (or Medieval Period) lasted from the 5th to the 15th century.
The Montenegrin Orthodox Church (MOC; Montenegrin: Crnogorska Pravoslavna Crkva (CPC)/Црногорска православна црква (ЦПЦ)) is an Orthodox Christian Church acting in Montenegro and Montenegrin diaspora (most notably in Serbia and Argentina).
Mount Athos (Άθως, Áthos) is a mountain and peninsula in northeastern Greece and an important centre of Eastern Orthodox monasticism.
A moveable feast or movable feast is an observance in a Christian liturgical calendar that occurs on a different date (relative to the dominant civil or solar calendar) in different years.
The Nabataean Kingdom (المملكة النبطية), also named Nabatea, was a political state of the Arab Nabataeans during classical antiquity.
The nativity of Jesus or birth of Jesus is described in the gospels of Luke and Matthew.
Nero (Latin: Nero Claudius Caesar Augustus Germanicus; 15 December 37 – 9 June 68 AD) was the last Roman emperor of the Julio-Claudian dynasty.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
November is the eleventh and penultimate month of the year in the Julian and Gregorian Calendars, the fourth and last of four months to have a length of 30 days, and the fifth and last of five months to have a length of less than 31 days.
November (from Latin novem, "nine") or mensis November was originally the ninth of ten months on the Roman calendar, following October (octo, "eight") and preceding December (decem, "ten").
Nowruz (نوروز,; literally "new day") is the name of the Iranian New Year, also known as the Persian New Year, which is celebrated worldwide by various ethno-linguistic groups as the beginning of the New Year.
The nundinae, sometimes anglicized to nundines,.
In astronomy, an octaeteris (plural: octaeterides) is the period of eight solar years after which the moon phase occurs on the same day of the year plus one or two days.
October is the tenth month of the year in the Julian and Gregorian Calendars and the sixth of seven months to have a length of 31 days.
October (from Latin octo, "eight") or mensis October was the eighth of ten months on the oldest Roman calendar.
The October Revolution (p), officially known in Soviet literature as the Great October Socialist Revolution (Вели́кая Октя́брьская социалисти́ческая револю́ция), and commonly referred to as Red October, the October Uprising, the Bolshevik Revolution, or the Bolshevik Coup, was a revolution in Russia led by the Bolsheviks and Vladimir Lenin that was instrumental in the larger Russian Revolution of 1917.
An official is someone who holds an office (function or mandate, regardless whether it carries an actual working space with it) in an organization or government and participates in the exercise of authority (either their own or that of their superior and/or employer, public or legally private).
An Old Calendarist is any Eastern Orthodox Christian or any Eastern Orthodox Church body which uses the historic Julian calendar (called "Old Style Calendar" or "Church calendar" or "Old Calendar"), and whose Church body is not in communion with the Eastern Orthodox Churches that use the New Calendar.
Old Style (O.S.) and New Style (N.S.) are terms sometimes used with dates to indicate that the calendar convention used at the time described is different from that in use at the time the document was being written.
Oriental Orthodoxy is the fourth largest communion of Christian churches, with about 76 million members worldwide.
The Orthodox Church in America (OCA) is an Eastern Orthodox Church, partly recognized as autocephalous, in North America.
The Orthodox Church in America Bulgarian Diocese is one of three ethnic dioceses of the Orthodox Church in America (OCA).
Orthodoxy (from Greek ὀρθοδοξία orthodoxía "right opinion") is adherence to correct or accepted creeds, especially in religion.
The Ottoman Empire (دولت عليه عثمانیه,, literally The Exalted Ottoman State; Modern Turkish: Osmanlı İmparatorluğu or Osmanlı Devleti), also historically known in Western Europe as the Turkish Empire"The Ottoman Empire-also known in Europe as the Turkish Empire" or simply Turkey, was a state that controlled much of Southeast Europe, Western Asia and North Africa between the 14th and early 20th centuries.
''Festa di Pales, o L'estate'' (1783), a reimagining of the Festival of Pales by Joseph-Benoît Suvée In ancient Roman religion, the Parilia is a festival of rural character performed annually on 21 April, aimed at cleansing both sheep and shepherd.
The Paris Observatory (Observatoire de Paris or Observatoire de Paris-Meudon), a research institution of PSL Research University, is the foremost astronomical observatory of France, and one of the largest astronomical centres in the world.
In Christianity, the Passion (from Late Latin: passionem "suffering, enduring") is the short final period in the life of Jesus covering his entrance visit to Jerusalem and leading to his crucifixion on Mount Calvary, defining the climactic event central to Christian doctrine of salvation history.
Paullus Fabius Maximus (died AD 14) was a Roman senator, active toward the end of the first century BC.
De Bello Civili (On the Civil War), more commonly referred to as the Pharsalia, is a Roman epic poem by the poet Lucan, detailing the civil war between Julius Caesar and the forces of the Roman Senate led by Pompey the Great.
Pliny the Elder (born Gaius Plinius Secundus, AD 23–79) was a Roman author, naturalist and natural philosopher, a naval and army commander of the early Roman Empire, and friend of emperor Vespasian.
Plutarch (Πλούταρχος, Ploútarkhos,; c. CE 46 – CE 120), later named, upon becoming a Roman citizen, Lucius Mestrius Plutarchus, (Λούκιος Μέστριος Πλούταρχος) was a Greek biographer and essayist, known primarily for his Parallel Lives and Moralia.
The Polish Autocephalous Orthodox Church, commonly known as the Polish Orthodox Church (Polski Autokefaliczny Kościół Prawosławny), or (Orthodox) Church of Poland is one of the autocephalous Eastern Orthodox Churches in full communion.
The Pontifex Maximus or pontifex maximus (Latin, "greatest priest") was the chief high priest of the College of Pontiffs (Collegium Pontificum) in ancient Rome.
Pope Gregory XIII (Gregorius XIII; 7 January 1502 – 10 April 1585), born Ugo Boncompagni, was Pope of the Catholic Church from 13 May 1572 to his death in 1585.
Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.
Portugal, officially the Portuguese Republic (República Portuguesa),In recognized minority languages of Portugal: Portugal is the oldest state in the Iberian Peninsula and one of the oldest in Europe, its territory having been continuously settled, invaded and fought over since prehistoric times.
A procession (French procession via Middle English, derived from Latin, processio, from procedere, to go forth, advance, proceed) is an organized body of people walking in a formal or ceremonial manner.
The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582.
The proleptic Julian calendar is produced by extending the Julian calendar backwards to dates preceding AD 4 when the quadrennial leap year stabilized.
Saint Prosper of Aquitaine (Prosper Aquitanus; – AD), a Christian writer and disciple of Saint Augustine of Hippo, was the first continuator of Jerome's Universal Chronicle.
Prussia (Preußen) was a historically prominent German state that originated in 1525 with a duchy centred on the region of Prussia.
Publius Juventius Celsus Titus Aufidius Hoenius Severianus (AD 67– AD 130) — the son of a little-known jurist of the same name, hence also Celsus filius — was, together with Julian, the most influential ancient Roman jurist of the High Classical era.
In the ancient Roman calendar, Quintilis or Quinctilis was the month following Junius (June) and preceding Sextilis (August).
The red deer (Cervus elaphus) is one of the largest deer species.
The Regifugium ("Flight of the King") or Fugalia ("Festival of the Flight") was an annual religious festival that took place in ancient Rome every February 24 (a.d. VI Kal.).
A regnal year is a year of the reign of a sovereign, from the Latin regnum meaning kingdom, rule.
The Renaissance is a period in European history, covering the span between the 14th and 17th centuries.
The Republic of Venice (Repubblica di Venezia, later: Repubblica Veneta; Repùblica de Venèsia, later: Repùblica Vèneta), traditionally known as La Serenissima (Most Serene Republic of Venice) (Serenissima Repubblica di Venezia; Serenìsima Repùblica Vèneta), was a sovereign state and maritime republic in northeastern Italy, which existed for a millennium between the 8th century and the 18th century.
The Revised Julian calendar, also known as the Milanković calendar, or, less formally, new calendar, is a calendar proposed by the Serbian scientist Milutin Milanković in 1923, which effectively discontinued the 340 years of divergence between the naming of dates sanctioned by those Eastern Orthodox churches adopting it and the Gregorian calendar that has come to predominate worldwide.
The Roman calendar was the calendar used by the Roman kingdom and republic.
The Roman clock, or time of day, was divided into 24 hours (Latin horae), 12 hours of light and 12 hours of darkness.
The traditional Romanian calendar has its own names for the months, which are otherwise identical to those of the Gregorian calendar.
The Romanian Orthodox Church (Biserica Ortodoxă Română) is an autocephalous Orthodox Church in full communion with other Eastern Orthodox Christian Churches and ranked seventh in order of precedence.
The Rumi calendar (Rumi takvim, "Roman calendar"), a specific calendar based on the Julian calendar was officially used by the Ottoman Empire after Tanzimat (1839) and by its successor, the Republic of Turkey until 1926.
Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.
The Russian Orthodox Church (ROC; Rússkaya pravoslávnaya tsérkov), alternatively legally known as the Moscow Patriarchate (Moskóvskiy patriarkhát), is one of the autocephalous Eastern Orthodox churches, in full communion with other Eastern Orthodox patriarchates.
The Russian Orthodox Church Outside Russia (Ру́сская Правосла́вная Це́рковь Заграни́цей, Russkaya Pravoslavnaya Tserkov' Zagranitsey), or ROCOR, also until 2007 part of True Orthodoxy's Russian Orthodox Church Abroad, ROCA, historically also referred to as Karlovatsky Synod (Карловацкий синод), or "Karlovatsky group", or the Synod of Karlovci, is since 2007 a semi-autonomous part of the Russian Orthodox Church (Moscow Patriarchate).
The Second Punic War (218 to 201 BC), also referred to as The Hannibalic War and by the Romans the War Against Hannibal, was the second major war between Carthage and the Roman Republic and its allied Italic socii, with the participation of Greek polities and Numidian and Iberian forces on both sides.
A senatus consultum (Latin – decree of the senate; plural senatus consulta) is a text emanating from the senate in Ancient Rome.
September is the ninth month of the year in the Julian and Gregorian calendars, the third of four months to have a length of 30 days, and the fourth of five months to have a length of less than 31 days.
September (from Latin septem, "seven") or mensis September was originally the seventh of ten months on the ancient Roman calendar that began with March (mensis Martius, "Mars' month").
Serbia (Србија / Srbija),Pannonian Rusyn: Сербия; Szerbia; Albanian and Romanian: Serbia; Slovak and Czech: Srbsko,; Сърбия.
The Serbian Orthodox Church (Српска православна црква / Srpska pravoslavna crkva) is one of the autocephalous Eastern Orthodox Christian Churches.
Sextilis ("sixth") or mensis Sextilis was the Latin name for what was originally the sixth month in the Roman calendar, when March (Martius, "Mars' month") was the first of ten months in the year.
Hedjkheperre Setepenre Shoshenq I (Egyptian ššnq, Tamazight: ⵛⵉⵛⵓⵏⵇ cicunq), (reigned c. 943–922 BC)—also known as Sheshonk or Sheshonq I (for discussion of the spelling, see Shoshenq)—was a pharaoh of ancient Egypt and the founder of the Twenty-second Dynasty of Egypt.
While many Slavic languages officially use Latin-derived names for the months of the year in the Gregorian calendar, there is also a set of older names for the twelve months that differs from the Latin month names, as they are of Slavic origin.
Slovene months have standard modern names derived from Latin names, as in most European languages.
A solar calendar is a calendar whose dates indicate the season or almost equivalently the position of the apparent position of the sun in relative to the stars.
A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere.
Sosigenes of Alexandria (Σωσιγένης ὁ Ἀλεξανδρεύς) was a Greek astronomer from Ptolemaic Egypt who, according to Roman historian Pliny the Elder, was consulted by Julius Caesar for the design of the Julian calendar.
Southeast Europe or Southeastern Europe is a geographical region of Europe, consisting primarily of the coterminous Balkan peninsula.
The Southern Netherlands, also called the Catholic Netherlands, was the part of the Low Countries largely controlled by Spain (1556–1714), later Austria (1714–1794), and occupied then annexed by France (1794–1815).
Spain (España), officially the Kingdom of Spain (Reino de España), is a sovereign state mostly located on the Iberian Peninsula in Europe.
The Spanish era or era of Caesar was a dating system commonly used in the states of the Iberian peninsula until the 14th–15th centuries, when it was phased out in favour the Anno Domini system.
A state religion (also called an established religion or official religion) is a religious body or creed officially endorsed by the state.
Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.
The Swedish calendar (Svenska kalendern) or Swedish style (Svenska stilen) was a calendar in use in Sweden and its possessions from 1 March 1700 until 30 February 1712 (see below).
A synod is a council of a church, usually convened to decide an issue of doctrine, administration or application.
In Roman religion, Terminus was the god who protected boundary markers; his name was the Latin word for such a marker.
Christian Matthias Theodor Mommsen (30 November 1817 – 1 November 1903) was a German classical scholar, historian, jurist, journalist, politician and archaeologist.
Thomas Harriot (Oxford, c. 1560 – London, 2 July 1621), also spelled Harriott, Hariot or Heriot, was an English astronomer, mathematician, ethnographer and translator who made advances within the scientific field.
Tiberius (Tiberius Caesar Divi Augusti filius Augustus; 16 November 42 BC – 16 March 37 AD) was Roman emperor from 14 AD to 37 AD, succeeding the first emperor, Augustus.
A tropical year (also known as a solar year) is the time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice.
Turkey (Türkiye), officially the Republic of Turkey (Türkiye Cumhuriyeti), is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe.
Undecimber or Undecember is a name for a thirteenth month in a calendar that normally has twelve months.
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.
Vladimir the Great (also (Saint) Vladimir of Kiev; Володимѣръ Свѧтославичь, Volodiměrъ Svętoslavičь, Old Norse Valdamarr gamli; c. 958 – 15 July 1015, Berestove) was a prince of Novgorod, grand prince of Kiev, and ruler of Kievan Rus' from 980 to 1015.
A week is a time unit equal to seven days.
Western Europe is the region comprising the western part of Europe.
Sir William Smith (20 May 1813 – 7 October 1893) was an English lexicographer.
The winter solstice (or hibernal solstice), also known as midwinter, is an astronomical phenomenon marking the day with the shortest period of daylight and the longest night of the year.
A year is the orbital period of the Earth moving in its orbit around the Sun.
Zeeland (Zeelandic: Zeêland, historical English exonym Zealand) is the westernmost and least populous province of the Netherlands.
Imperial Civil Calendar, Imperial civil calendar, Julian Calendar, Julian Day calendar, Julian Reform, Julian calendar is this July, Julian calender, Julian reform, Julian year (calendar), Jullian calendar, O. S., Old Style Calendar, Old style calendar, Year of Confusion, Year of confusion.