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Calendar year

Index Calendar year

Generally speaking, a calendar year begins on the New Year's Day of the given calendar system and ends on the day before the following New Year's Day, and thus consists of a whole number of days. [1]

20 relations: Academic term, Calendar, Calendar reform, Common year, Fiscal year, Gregorian calendar, Hebrew calendar, Intercalation (timekeeping), Islamic calendar, ISO 8601, ISO week date, Julian calendar, Leap year, Lunar calendar, Lunar month, Model year, New Year's Day, Seasonal year, Tropical year, William Herschel.

Academic term

An academic term (or simply "term") is a portion of an academic year, the time during which an educational institution holds classes.

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Calendar

A calendar is a system of organizing days for social, religious, commercial or administrative purposes.

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Calendar reform

Calendar reform, properly calendrical reform, is any significant revision of a calendar system.

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Common year

A common year is a calendar year with 365 days.

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Fiscal year

A fiscal year (or financial year, or sometimes budget year) is the period used by governments for accounting and budget purposes, which vary between countries.

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Gregorian calendar

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

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Hebrew calendar

The Hebrew or Jewish calendar (Ha-Luah ha-Ivri) is a lunisolar calendar used today predominantly for Jewish religious observances.

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Intercalation (timekeeping)

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.

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Islamic calendar

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.

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ISO 8601

ISO 8601 Data elements and interchange formats – Information interchange – Representation of dates and times is an international standard covering the exchange of date- and time-related data.

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ISO week date

The ISO week date system is effectively a leap week calendar system that is part of the ISO 8601 date and time standard issued by the International Organization for Standardization (ISO) since 1988 (last revised in 2004) and, before that, it was defined in ISO (R) 2015 since 1971.

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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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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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Lunar calendar

A lunar calendar is a calendar based upon the monthly cycles of the Moon's phases (synodic months), in contrast to solar calendars, whose annual cycles are based only directly upon the solar year.

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Lunar month

In lunar calendars, a lunar month is the time between two successive syzygies (new moons or full moons).

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Model year

The model year (MY) of a product is a number used worldwide, but with a high level of prominence in North America, to describe approximately when a product was produced, and it usually indicates the coinciding base specification (design revision number) of that product.

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New Year's Day

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.

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Seasonal year

The seasonal year is the time between successive recurrences of a seasonal event such as the flooding of a river, the migration of a species of bird, or the flowering of a species of plant.

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Tropical year

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.

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William Herschel

Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.

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Redirects here:

365.2425, Calendar years, Civil year, First quarter of a calendar year, Fourth quarter of a calendar year, Q1 (calendar year), Q2 (calendar year), Q3 (calendar year), Q4 (calendar year), Quarter (time), Second quarter of a calendar year, Third quarter of a calendar year.

References

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

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