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The Tabular Islamic calendar is a rule-based variation of the Islamic calendar, in which months are worked out by arithmetic rules rather than by observation or astronomical calculation. It has a 30-year cycle with 11 leap years of 355 days and 19 years of 354 days. In the long term, it is accurate to one day in about 2,500 solar years or 2,570 ...
For Hijri years since 1297 AH (1879/1881 CE), the Gregorian date of 1 Muharram, the first day of the year in the Islamic calendar, is given. The first Hijri year (AH 1) was retrospectively considered to have begun on the Julian calendar date 15 July 622 (known as the 'astronomical' or 'Thursday' epoch, Julian day 1,948,439) or 16 July 622 (the ...
There is another version where, in addition, the fourth leap day is postponed to year 11 and the last leap day is in the last year of the 30-year cycle. The mean number of days per month in the 30-year cycle is 29.53056 days, or 29d 12h 44m. Six months of 29 days and six with 30 days, plus 11 days of the leap years.
The best known of these is the Tabular Islamic calendar: in brief, it has a 30-year cycle with 11 leap years of 355 days and 19 years of 354 days. In the long term, it is accurate to one day in about 2,500 solar years or 2,570 lunar years. It also deviates from observation by up to about one or two days in the short term.
A year in the Islamic lunar calendar consists of twelve lunar months and has only 354 or 355 days in its year. Consequently, its New Year's Day occurs ten days earlier each year relative to the Gregorian calendar. The year 2025 CE corresponds to the Islamic years AH 1446 – 1447; AH 1446 corresponds to 2024 – 2025 in the Common Era. [a]
30 Muharram September 29, 2019 Shia day of Mourning: 20th day of Ashura: Note: Observed next day in years in which Muharram has only 29 days 1-30 Safar: September 30 - October 28, 2019 2nd Month of the Islamic Calendar 1 Safar September 30, 2019 Two Shia Days of Remembrance: 7 Safar October 6, 2019 Birth of Imam Musa-e-Kazim, 128 A.H. 10 Safar
The Islamic calendar is based on the synodic period of the Moon's revolution around the Earth, approximately 29 1 ⁄ 2 days. The Islamic calendar alternates months of 29 and 30 days (which begin with the new moon). Twelve of these months make up an Islamic year, which is 11 days shorter than the Gregorian year.
Under the Taliban's first rule from 1996 to 2001, the lunar Hijri calendar was imposed, thus changing the year overnight from 1375 to 1417. [10] With effect from 1 Muharram 1444 AH (8 Mordad 1401 SH; 30 July 2022 CE) (the Islamic New Year of the lunar Hijri calendar), the Taliban once again imposed the lunar calendar. Thus the year number once ...