The Islamic calendar, Muslim calendar or Hijri calendar is a lunar calendar consisting of 12 months in a year of 354 or 355 days. Being a purely lunar calendar, it is not synchronized with the seasons. With an annual drift of 10 or 11 days, the seasonal relation repeats about every 33 Islamic years. It is used to date events in many Muslim countries, and used by Muslims everywhere to determine the proper days on which to observe the annual fast, to attend Hajj, and to celebrate other Islamic holidays and festivals. The first year was the Islamic year beginning in AD 622 during which the emigration of Muhammad from Mecca to Medina, known as the Hijra, occurred. Each numbered year is designated either H for Hijra or AH for the Latin anno Hegirae, hence, Muslims typically call their calendar the Hijri calendar. The current Islamic year is 1434 AH. In the Gregorian calendar 1434 AH runs from approximately 14 November 2012 to 4 November 2013. Wikipedia [ - ]

The Islamic calendar, Muslim calendar or Hijri calendar is a lunar calendar consisting of 12... [ + ]