The Commemoration of Ashura is an important observance in the Islamic calendar, occurring on the 10th day of Muharram. It holds significant meaning for both Sunni and Shia Muslims, though the reasons for observance differ. For Shia Muslims, it marks the martyrdom of Imam Hussein, the grandson of the Prophet Muhammad, at the Battle of Karbala in 680 CE, symbolizing the struggle against tyranny. For Sunni Muslims, Ashura is a day of fasting and reflection, commemorating various historical events, including the day Moses and the Israelites were saved from Pharaoh. The observance often includes prayer, fasting, and community gatherings, emphasizing themes of sacrifice, justice, and remembrance.