According to Islamic Sources, Muhammad made the hijra in the year 622 C.E. according to the Western Gregorian calendar.
However, for a Muslim the answer is much easier, because the hijra marks the beginning of the Islamic calendar. So a Muslim considers it the year 1.
First Hijra was made to Abeysinia.
By Lunar year called Hijra Calendar
AH after year means After Hijrah. This is the Islam Calendar.The Hijra (هِجْرَة), or withdrawal, is the emigration of Muhammad and his followers to the city of Medina in 622, and marks the start of the Hijri year of the Islamic calendar. The current Islamic Year is 1430 AH.P.S: The Hijra is celebrated annually on 8 Rabi' I, about 66 days after 1 Muharram, the first day of the Muslim year. Many writers confuse the first day of the year of the Hijra with the date of the Migration to Medina itself, erroneously stating that the Hijra occurred on 1 Muharram AH 1 or 16 July 622.For more information on it, visit:http://en.wikipedia.org/wiki/Hijri_yearJazak Allah Khair.AssalamOAlaikum (peace be onto you)
This was in year 622 AD and marked the first year in Islamic (or Hijra) Lunar Calendar.
622
The important year is the year of immigration (Hijra) of prophet Muhammad from Mecca (Makkah) to Medina per God command and when told by God that the unbelievers in Mecca are plotting to assassinate him. This was the year 632 AD. The immigration or Hijra year marked the starting of the Islamic Lunar Calendar or Hijra Calendar for its importance.
Ummukulsu
It wasn't a revolution, it was a "Hijra", an immigration from Makkah (Mecca) to Al Madinah (Medina) in year 621 AD.
It was the eighth year of the Hijra. In Gregorian reckoning, it was in January 630.
On arrival of prophet Muhammad (PBUH) to Medina coming from Makkah (Mecca) during Hijra in year 622 AD.
True. Hijra does mark the start of the Islamic calender, hence the abbreviation A.H (after hijra). Meaning after the migration to Medina from Makkah where the first Islamic state was established.
In Islam, the first mosque was built by Muhammad in Quba, while he was travelling to Medina (Hijra). The first Friday prayer in Islamic history was also offered in this very mosque.