It consists of 11 leap years of 355 days and 19 years of 354 days. The tabular Islamic calendar is also an Islamic calendar which is not based upon astronomical calculation rather it is a rule-based variation Islamic calendar. A few countries including Pakistan have chosen Saturday and Sunday as their official weekends keeping Friday as a working day. In Muslim countries like Egypt and Saudi Arabia Friday and Saturday are considered as official weekends. Muslims gather on this day and offer their Jummah Prayer. Friday in most of the Islamic countries is considered the day of rest.

Islamic days of week start at sunset like those in the Hebrew and Bahá'í calendars.

The length of an Islamic month depends upon the lunar cycle.ĭepending upon the visibility of moon each month can have 29 to 30 days. Four months are considered sacred among the twelve months which are Muharram, Dhū al-Qa‘dah, Rajab and Dhu al-Ḥijjah. New Islamic year starts from the month of Muharram. There are twelve Islamic months the names of Islamic months are Muhararam, Safar, Rabi al-awwal, Rabi at-thani, jumādá al-ūlá, Jumādá al-ākhirah, Rajab, Sha‘bān, Ramaḍān, Shawwāl, Dhū al-Qa‘dah, Dhū al-Ḥijjah. The current Islamic year in Hijri calendar is AH.

It is often used to determine the proper days of Islamic rituals. Islamic or Hijri calendar is a calendar consisting of 12 months in a year.

Shia calendar 2019