Sha'ban 15
Rajab
Sha'ban 1446
Ramadan
- 255 AH – Birth of Imam al-Mahdi (aj) the last Imam in Twelver Shi'ism, (July 29, 869 CE)
- 329 AH – Demise of Ali b. Muhammad al-Samuri, the fourth deputy of Imam al-Mahdi (aj) (May 15, 941 CE)
- 447 AH - Fall of the Al Buya Dynasty by Tughrul-beg (November 9, 1055 CE)
- 1351 AH - Demise of 'Abd Allah Mamaqani (December 14, 1932 CE)
- 1380 AH - Demise of 'Ali Akbar Ilahiyan (February 2, 1961 CE)
- 1380 AH - Demise of Muhammad Husayn Tuni (February 2, 1961 CE)
- 1394 AH - Opening of the Public Library of Ayatollah Mar'ashi Najafi in Qom, Iran (September 3, 1974 CE)
- 1398 AH - Demise of Ahmad Kafi (July 21, 1978 CE)
- 1411 AH - Demise of Hasan Nuri Hamadani (March 2, 1991 CE)
- 1414 AH - The first general conference of Ahl al-Bayt (a) World Assembly (January 28, 1994 CE)