 Ali's birthday is celebrated on 13th of Rajab by Shia Muslims to remember their first Imam who was born in the House of Allah/Kaaba.His death is remembered and mourned from the 19 to 21st of Ramadan which is the anniversary of his assassination and martyrdom.The "ziyarat" of the Tomb of Imam Ali in the Imam Ali Mosque is a usual religious tradition among Shias and Sufis.