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The Hijrah of Muhammad begins, marking the beginning of the Islamic calendar.
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Hijrah
Journey of Muhammad from Mecca to Medina
The Hijrah, also Hegira, was the journey the Islamic prophet Muhammad and his followers took from Mecca to Medina. The year in which the Hijrah took place is also identified as the epoch of the Lunar Hijri and Solar Hijri calendars; its date equates to 16 July 622 in the Julian…Source: Wikipedia (CC BY-SA)
Muhammad
Founder of Islam (c. 570 – 632)
Muhammad was an Arab religious, military and political leader and the founder of Islam. According to Islam, he was a prophet who was divinely inspired to preach and confirm the monotheistic teachings of Adam, Noah, Abraham, Moses, Jesus, and other prophets. He is believed by…Source: Wikipedia (CC BY-SA)
Islamic calendar
Lunar calendar used by most Muslims
The Hijri calendar, also known in English as the Islamic calendar, is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual fasting and the annual season for the…Source: Wikipedia (CC BY-SA)