Muḥarram is the first month of the Islamic calendar. It is one of the four sacred months of the year when warfare is forbidden. It is held to be the second holiest month after Ramadan. Wikipedia Month number : 1 Number of days : 29-30 (depends on actual observation of the moon's crescent) Calendar : Islamic calendar Why do we celebrate Muharram? It is believed that Prophet Ibrahim (A.S.) was born on the 10th of Muharram. The Day of Ashura also commemorates when the Prophet Musa (AS) and the Children of Israel were freed by Allah from the Pharaoh and his army . It is also the day on which the martyrdom of Imam Hussain (AS) in the Battle of Karbala took place. Muḥarram (Arabic: ٱلْمُحَرَّم) is the first month of the Islamic calendar . It is one of the four sacred months of the year when warfare is forbidden. It is held to be the second holiest month after Ramadan.