Re: How did the Islamic calendar work back in the day?
Islamic New Year
The Islamic new year begins on the first day of the month of Muharram.
The Hijri calendar is counted from the year of the Hijra (the year in which Prophet Muhammad emigrated with Sayiduna Abu Bakr from Mecca to Madinah over 1400 years ago ( Year 622 A.D).
The Muslim Hijri Calendar has 12 months. Each month is either 29 or 30 days.
The Hijri months are: Muharram, Safar, Rabi al-Awwal, Rabi al-Akhir, Jumada al-Awwal, Jumada ath-Thaniy, Rajab, Sha^ban, Ramadan, Shawwal, Dhu'l-Qa^dah, Dhu'l-Hijjah