MONTHS IN ISLAMIC CALENDAR MOD

Leap years could then be years in which the number year mod 30 is one of the following: 2, 5, 7, 10, 13, 16, 18, 21, 24, 26, or 29. Some sources mention a crude system in which all odd numbered months have 30 days and all even numbered months have 29 days with an extra day added to the last month in ‘leap years’ (a concept otherwise unknown in the calendar). However, calendars are printed for planning purposes, but such calendars are based on estimates of the visibility of the lunar crescent, and the actual month may start a day earlier or later than predicted in the printed calendar.ĭifferent methods for estimating the calendars are used.

So you can’t print an Islamic calendar in advance?

Doesn’t Saudi Arabia have special rules?.

When will the Islamic calendar overtake the Gregorian calendar?.

So you can’t print an Islamic calendar in advance?.

But other Muslim countries use the Gregorian calendar for civil purposes and only turn to the Islamic calendar for religious purposes. The Islamic calendar is the official calendar in countries around the Gulf, especially Saudi Arabia.

The calendar is based on the Qur'an (Sura IX, 36-37) and its proper observance is a sacred duty for Muslims. It contains 12 months that are based on the motion of the moon, and because 12 synodic months is only 12 x 29.53=354.36 days, the Islamic calendar is consistently shorter than a tropical year, and therefore it shifts with respect to the Christian calendar. The Islamic calendar (or Hijri calendar) is a purely lunar calendar. It is the most sacred Muslim site, and the location towards which all Muslims face during prayer. According to Islamic tradition, the cube-shaped Kabba dates back to the time of Abraham.

Months in islamic calendar