The sacred holiday Hijra. Beginning in accordance with the Hijra
Start the new year is celebrated by AH 1 st day of Muharram Muslim lunar calendar (2006 - 30 January - the beginning of the year 1427, in 2007 - 20 January - beginning of year 1428). This month has special significance for Muslims, so he called sacred. In this month, when Mohammed was still not enough number of followers, he had to make the famous migration - Hijra from Mecca to Yastryb, named after the city of the Prophet, that Medina, along with family and friends. This event took place on July 16, the 622 on the Gregorian calendar and is considered the beginning of the Muslim era, because of Muharram so revered by Muslims.
New Muslim calendar, in which the starting point was the day of release (Hijra) of Muhammad from Mecca to Medina, introduced in 634, one of his associates Caliph Omar.