Tabular Islamic calendar

{{Infobox calendar date today}}

{{Infobox calendar date today}}

{{Islam}}

{{Islam}}

The '''Tabular Islamic calendar''' ({{langx|ar|التقويم الهجري المجدول|altaqwim alhijriu almujadwal}}) is a rule-based variation of the [[Islamic calendar|lunar Hijri cakendar]]. It has the same numbering of years and months, but the months are determined by arithmetical rules rather than by observation or astronomical calculations. It was developed by early Muslim astronomers of the second hijra century (the 8th century of the [[Common Era]]) to provide a predictable time base for calculating the positions of the Moon, Sun, and planets. It is now used by historians to convert an Islamic date into a Western calendar when no other information (like the day of the week) is available. Its [[calendar era]] is the [[Hijri year]]. An example is the [[Fatimid Caliphate|Fatimid]] or Misri calendar.

The '''Tabular Islamic calendar''' ({{langx|ar|التقويم الهجري المجدول|altaqwim alhijriu almujadwal}}) is a rule-based variation of the [[Islamic calendar|lunar Hijri calendar]]. It has the same numbering of years and months, but the months are determined by arithmetical rules rather than by observation or astronomical calculations. It was developed by early Muslim astronomers of the second hijra century (the 8th century of the [[Common Era]]) to provide a predictable time base for calculating the positions of the Moon, Sun, and planets. It is now used by historians to convert an Islamic date into a Western calendar when no other information (like the day of the week) is available. Its [[calendar era]] is the [[Hijri year]]. An example is the [[Fatimid Caliphate|Fatimid]] or Misri calendar.

Each year has 12 months and 354 or 355 days.<!-- Yes,355 not 365. It is a lunar "year", not a solar year. --> The odd numbered months have 30 days and the even numbered months have 29 days, except in a [[leap year]] when the 12th and final month ''Dhu al-Hijjah'' has 30 days.

Each year has 12 months and 354 or 355 days.<!-- Yes,355 not 365. It is a lunar "year", not a solar year. --> The odd numbered months have 30 days and the even numbered months have 29 days, except in a [[leap year]] when the 12th and final month ''Dhu al-Hijjah'' has 30 days.