| name
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description
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| Gregorian calendar
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- The epoch is the year of presumed birth of Jesus of Nazareth.
- The epoch begins with the year one.
- The start of a year is the presumed day of circumcision of Jesus of Nazareth.
- There are 12 months in a year.
- Days for months are 31, 28 (without leap), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31.
- The start of a day is the midnight in Greenwich added or subtracted by multiples of 1 hour, and in some cases further adding or subtracting 1/2 or 1/4 hours.
- There is 1 leap day every 4 years added to the second month, except when the year is divisible by 100 and not divisible by 400.
- (There are about 1 leaps in 4 years.)
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| Burmese Kawza calendar
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- The epoch is possibly the year of the usurpation by the King Popa Sawrahan.
- The epoch begins with the year zero.
- There are 12 months (without leap) in a year.
- A month is divided into two parts: waxing and waning.
- The 15th day in a month is the day of full moon; the last day in a month is the day of new moon.
- (There are 29 or 30 days in a month.)
- The start of a day is at sunrise.
- (There are about 1 leaps in 3 years.)
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| Chinese agricultural calendar
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- The epoch is the year of presumed enthronement of Yellow Thearch.
- The epoch begins with the year one.
- The start of a year is possibly the presumed day of enthronement of Thearch Shun.
- There are 12 (without leap) months in a year.
- The first month is the month with winter solstice.
- The first day of a month is the day with new moon.
- (There are 29 or 30 days in a month.)
- The start of a day is the midnight.
- The leap month is placed after the first month without a solar term of an even number.
- (There are about 7 leaps in 19 years.)
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| Hebrew calendar
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- The epoch is the creation of the world in Genesis.
- The epoch begins with the year one.
- The start of the year one is the presumed day of creation of the world in Genesis.
- There are 12 (without leap) months in a year.
- The start of a day is at sunset.
- There are 13 months for year 3, 6, 8, 11, 14, 17, 19 in a 19-year cycle.
- The leap month is placed at the end of the year.
- (There are about 7 leaps in 19 years.)
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| Japanese calendar
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- The epoch is the year of the reign of the current Emperor.
- The epoch begins with the year one.
- The start of the year one is the presumed day of circumcision of Jesus of Nazareth.
- There are 12 months in a year.
- Days for months are 31, 28 (without leap), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31.
- The start of a day is the midnight in Greenwich added by 9 hours.
- There is 1 leap day every 4 years added to the second month, except when the year is divisible by 100 and not divisible by 400.
- (There are about 1 leaps in 4 years.)
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| Korean agricultural calendar
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- The epoch is the year of the foundation of Gojoseon.
- The epoch begins with the year one.
- The start of a year is possibly the presumed day of enthronement of Thearch Shun.
- There are 12 (without leap) months in a year.
- The first month is the month with winter solstice.
- The first day of a month is the day with new moon.
- (There are 29 or 30 days in a month.)
- The start of a day is the midnight.
- The leap month is placed after the first month without a solar term of an even number.
- (There are about 7 leaps in 19 years.)
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| lunar Hijri calendar
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- The epoch is the year of Hijrah.
- The epoch begins with the year one.
- There are 12 months in a year.
- The first day of a month is the day with the first sight of the crescent.
- (There are 29 or 30 days in a month.)
- The start of a day is at sunset.
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| Republic of China calendar
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- The epoch is the year of presumed foundation of the Republic of China.
- The epoch begins with the year one.
- The start of the year one is the presumed day of circumcision of Jesus of Nazareth.
- There are 12 months in a year.
- Days for months are 31, 28 (without leap), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31.
- The start of a day is the midnight in Greenwich added by 8 hours.
- There is 1 leap day every 4 years added to the second month, except when the year is divisible by 100 and not divisible by 400.
- (There are about 1 leaps in 4 years.)
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| scheduled lunar Hijri calendar
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- The epoch is the year of Hijrah.
- The epoch begins with the year one.
- There are 12 months in a year.
- There are 30 days in months of an odd number, 29 days in months of an even number, 29 (without leap) days for the last month.
- There are 30 days in the last month, if the number of the year in a 30-year cycle multiplied by 11/30 minus the number of past leaps in the 30-year cycle is higher than 1/2. (Years with a leap in the 30-year cycle are 2, 5, 7, 10, 13, 16, 18, 21, 24, 26, 29.)
- The start of a day is at sunset.
- (There are 11 leaps in 30 years.)
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| solar Hijri calendar
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- The epoch is the year of Hijrah.
- The epoch begins with the year one.
- The start of a year is the vernal equinox.
- There are 12 months in a year.
- There are 31 days in the first 6 months, 30 days in the next 5 months, 29 (without leap) days in the last month.
- The start of a day is at sunset.
- (There are about 8 leaps in 33 years.)
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