The official weekend holiday in Iran is Friday. Iranian religious holidays are based on lunar system while the Persian calendar is based on Solar system. Religious holidays are subject to change depending upon the official sighting of the moon. Generally in the below-mentioned banking holidays which are mostly religious, all the historical sites and museums are not working.

25 January (Arba’in)
2 February (Demise of Prophet)
4-5 June (Demise of Imam Khomeini)
21 August (Martyrdom of Imam Ali)
24 September (Martyrdom of Imam Jafar)
5-6 December (Tasooa and Ashoora)

 

2012

14 January (Arba’in)
22 January (Demise of Prophet)

4-5 June (Demise of Imam Khomeini)

9 August (Martyrdom of Imam Ali)

12 September(Martyrdom of Imam Jafar)
23-24 November (Tasooa and Ashoora)