2024-07-26 00:00:00 Happy Muharram Greeting Cards Collection.. We wish you happy Muharram to you and your family. Muharram commemorates the death of Prophet Muhammed's grandson, Hussein Ibn Ali, who was brutally martyred during the Battle of Karbala on the tenth day of Muharram, known as the Day of Ashura. The first month of the Muslim calendar is marked by the festival of Muharram, which is also the start of the new Islamic year.