Ashura is a holy day for Muslims all over the world, celebrated on the 10th day of Muharram, according to the Islamic calendar. This year, Ashura falls on August 28. The Shi’a Muslims see it as the climax of the Remembrance of Muharram and the martyrdom of Husayn ibn Ali (the grandson of the Prophet Muhammad) at the battle of Karbala.
For the Sunnis, Ashura is the day Moses fasted to show his gratitude for the freedom of the Israelites. Today is also a holy day of mourning observed primarily by Shi’a Muslims. Other Muslim sects spend the day fasting and meditating.