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February 30

Index February 30

February 30 (or 30 February) occurs on some calendars but not the Gregorian calendar, where the month of February contains only 28 days, or 29 days in a leap year. [1]

31 relations: Application software, Astronomy, August, Augustus, Coptic calendar, Doomsday rule, February, February 29, Great Northern War, Gregorian calendar, Hadley Centre for Climate Prediction and Research, Hanke–Henry Permanent Calendar, Hobbit, Ides of March, J. R. R. Tolkien, January 0, Johannes de Sacrobosco, Julian calendar, Julius Caesar, July, Leap year, Middle-earth, Middle-earth calendar, Ray Bradbury, Soviet calendar, Swedish Empire, Symmetry454, The 35th of May, or Conrad's Ride to the South Seas, The Lord of the Rings, Tolkien's legendarium, World Calendar.

Application software

An application software (app or application for short) is a computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user.

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Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

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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.

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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.

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Coptic calendar

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.

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Doomsday rule

The Doomsday rule is an algorithm of determination of the day of the week for a given date.

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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.

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February 29

February 29, also known as leap day or leap year day, is a date added to most years that are divisible by 4, such as 2008, 2012, 2016, 2020, and 2024.

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Great Northern War

The Great Northern War (1700–1721) was a conflict in which a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Northern, Central and Eastern Europe.

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Gregorian calendar

The Gregorian calendar is the most widely used civil calendar in the world.

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Hadley Centre for Climate Prediction and Research

The Met Office Hadley Centre for Climate Change — named in honour of George Hadley — is one of the United Kingdom's leading centres for the study of scientific issues associated with climate change.

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Hanke–Henry Permanent Calendar

The Hanke–Henry Permanent Calendar (HHPC) is a proposal for calendar reform.

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Hobbits are a fictional, diminutive, humanoid race who inhabit the lands of Middle-earth in J. R. R. Tolkien’s fiction.

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Ides of March

The Ides of March (Idus Martiae, Late Latin: Idus Martii) is a day on the Roman calendar that corresponds to 15 March.

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J. R. R. Tolkien

John Ronald Reuel Tolkien, (Tolkien pronounced his surname, see his phonetic transcription published on the illustration in The Return of the Shadow: The History of The Lord of the Rings, Part One. Christopher Tolkien. London: Unwin Hyman, 1988. (The History of Middle-earth; 6). In General American the surname is also pronounced. This pronunciation no doubt arose by analogy with such words as toll and polka, or because speakers of General American realise as, while often hearing British as; thus or General American become the closest possible approximation to the Received Pronunciation for many American speakers. Wells, John. 1990. Longman pronunciation dictionary. Harlow: Longman, 3 January 1892 – 2 September 1973) was an English writer, poet, philologist, and university professor who is best known as the author of the classic high fantasy works The Hobbit, The Lord of the Rings, and The Silmarillion.

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January 0

January 0 is an alternative name for December 31.

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Johannes de Sacrobosco

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.

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Julian calendar

The Julian calendar, proposed by Julius Caesar in 46 BC (708 AUC), was a reform of the Roman calendar.

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Julius Caesar

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.

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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.

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Leap year

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.

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Middle-earth is the fictional setting of much of British writer J. R. R. Tolkien's legendarium.

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Middle-earth calendar

J. R. R. Tolkien invented a number of calendars for his legendarium.

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Ray Bradbury

Ray Douglas Bradbury (August 22, 1920June 5, 2012) was an American author and screenwriter.

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Soviet calendar

While the Gregorian calendar was implemented in Soviet Russia in February 1918 by dropping the Julian dates of 1–13 February 1918 pursuant to a Sovnarkom decree, the Soviet calendar added five- and six-day work weeks between 1929 and 1940.

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Swedish Empire

The Swedish Empire (Stormaktstiden, "Great Power Era") was a European great power that exercised territorial control over much of the Baltic region during the 17th and early 18th centuries.

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The Symmetry454 Calendar (Sym454) is a proposal for calendar reform created by Dr.

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The 35th of May, or Conrad's Ride to the South Seas

The 35th of May, or Conrad's Ride to the South Seas (Der 35. Mai oder Konrad reitet in die Südsee in German, its original language) is a novel by Erich Kästner, first published in 1931.

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The Lord of the Rings

The Lord of the Rings is an epic high fantasy novel written by English author and scholar J. R. R. Tolkien.

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Tolkien's legendarium

Tolkien's legendarium is the body of J. R. R. Tolkien's mythopoetic writing that forms the background to his The Lord of the Rings.

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World Calendar

The World Calendar is a proposed reform of the Gregorian calendar created by Elisabeth Achelis of Brooklyn, New York in 1930.

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Redirects here:

0 March, 30 February, 30 February 1712, 30th February, 31 February, Feb 30, February 30th, February 31, Febuary 30, March 0, March 0th, March zero, March zeroth.


[1] https://en.wikipedia.org/wiki/February_30

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