Like any other country, Iran has its Public Holidays. Some of these holidays are national, and some are religious and ceremonies. The first two weeks of the Iranian new year, AKA Nowruz or the nationalization of the Iranian oil industry, are national events, Eid al-Fitr, a religious holiday like Tasua and Ashura.
Since the religious holiday is related to the lunar calendar and is different from the official Iranian-Solar calendar, the holidays change every year. On the other hand, Public Holidays do not necessarily mean that everywhere, including tourist attractions, is closed.
Therefore, knowing these days and in which holidays the historical or cultural site is open to visiting or not is a necessity of your trip.
The following information will come in handy: