April 

01 Islamic Republic Day/Arba'in-e Hosseini 
02 Sizdah-bedar (Nature Day)
07 Death of the Prophet and Martyrdom of Imam Hassan 
21 The Prophet's Birthday Imam Sadeq 

June 

04 Death of Imam Khomeini 
05 Anniversary of the Uprising Against the Shah 

August 

17 Birthday of Imam Ali 

September 

01 Ascension of Mohammed 
18 Birthday of Imam Mahdi 
22 Martyrdom of Imam Ali 

November 

01 Qud's Day 
03 or 04 Eid al Fitr, End of Ramadan 
28 Martyrdom of Imam Sadeq 

*The religious holidays are based on the Lunar Islamic Calendar and other holidays on the solar calendar. Therefore religious holidays are subject to change depending upon the official sighting of the moon.