Muharram

Ashura is the tenth day of Muharram, the first month of the Islamic calendar. Sacred for its connection to Prophet Musa's deliverance and transformed by the martyrdom of Imam Husayn at Karbala in 680 CE, it is observed across all Islamic traditions.

The Battle of Karbala (680 CE) was a confrontation in which Husayn ibn Ali, grandson of Prophet Muhammad, was killed with his companions by Umayyad forces near the Euphrates. It became one of the most consequential events in Islamic history, shaping the development of Shia Islam.

The Hijri calendar is a lunar calendar of twelve months, four of them sacred, instituted as an era by the caliph Umar ibn al-Khattab and counted from the Hijra of 622 CE. It governs Islamic worship, festivals, and historical dating.