Ashura for the year 2015 is celebrated/ observed on sundown Friday, October 23rd ending on sundown of Saturday, October 24th.
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 2015
Friday, October 23rd is day number 296 of the 2015 calendar year with -5 years, -5 months, -28 days until Ashura 2015.