Tasu'a, Muharram 9. This day is recognized in the Hijri calendar the ninth day of Muharram and holds a significant place in Islamic history. Tasu'a is associated with the events leading up to Ashura and developments related to the Battle of Karbala that occurred on this day. In many regions, Tasu'a is marked by religious gatherings and mourning ceremonies. The day is observed to remember the historical events of Karbala and the roles of those present during that time.
