Ashura for the year 2021 is celebrated/ observed on sundown of Wednesday, August 18th ending at sundown on Thursday, August 19th.
Ashura marks the 10th day of the 1st month of Muharram on the Islamic lunar calendar. The day commemorates for Shia Muslims the death of Husayn ibn Ali who was the grandson of Muhammad in the Battle of Karbala of October 10, 680 CE. For Sunni Muslims the day relates to when Moses and his followers fled Egypt and where saved by God separating the Red Sea.
Days to Ashura 2021
Wednesday, August 18th is day number 230 of the 2021 calendar year with -2 years, -1 month, -15 days until Ashura 2021.