Muharram (Arabic: المحرّم) is the first month of the Islamic calendar. It is one of the four sacred months of the year in which fighting is prohibited.[1] Since the Islamic calendar is a lunar calendar, Muharram moves from year to year when compared with the Gregorian calendar
Muharram is so called because it is unlawful to fight during this month, the word is derived from the word haraam, meaning "sinful". It is held to be the most sacred of all the months, excluding Ramadan. Some Muslims fast during these days. The tenth day of Muharram is the Day of Ashura, which to Shia Muslims is part of the Mourning of Muharram.
Story of Imam Hussain Journey to Karbala