In Iran , holidays are celebrated on three different calendars: the Iranian solar calendar for events of republican significance, the Islamic moon calendar for religious holidays, the ordinary Gregorian calendar for international dates like May 1 .
| date of | Grigor. | Title | Iranian name | Notes |
| 1-4 Farvardin | Since March 21 | Novruz | عید نوروز | The beginning of the year, the spring equinox . |
| 12 Farvardin | April 1st | Islamic Republic Day | روز جمهوری اسلامی | Proclaimed on April 1, 1979 . |
| 13 Farvardin | April 2 | Nature day | روز طبیعت | Also known as Cizda be Bedar (سیزدهبدر) |
| 14 Hordad | June 4th | Anniversary of the death of Imam Khomeini | رحلت امام خمینی | The leader of the 1979 Islamic Revolution . |
| 15 Chordad | June 5th | Shah Rebellion Day | قیام ۱۵ خرداد | |
| 22 Bachmann | 11 February | Islamic Revolution Victory Day | پیروزی انقلاب | |
| 29 Esfand | March 19th | Oilfield Nationalization Day | ملی شدن صنعت نفت |
| date of | Title | Iranian name | Notes |
| 9 muharram | Tashua Imam Hussein | تاسوعا | |
| 10 muharram | Ashura | عاشورا | Memorial Day of Imam Hussein. |
| 20 safaris | Arbain | اربعین | The suffering of Imam Hussein. |
| 28 safar | Day of the death of the Prophet Muhammad | وفات حضرت محمد و شهادت امام حسن مجتبی | |
| 29 safar | The suffering of Imam Reza | شهادت امام رضا | |
| 17 rabbiul aval | Prophet Muhammad's Birthday | ولادت حضرت محمد و امام جعفر صادق | |
| 3 jumada as-sani | The suffering of Fatima | شهادت حضرت فاطمه | |
| 13 rajab | Imam Ali 's Birthday | ولادت حضرت علی | |
| 27 rajab | Rise (?) Of the Prophet | بعثت حضرت محمد | |
| 15 shaaban | Imam Mahdi 's Birthday | ولادت حضرت مهدی | |
| 21 ramadan | The suffering of Imam Ali | شهادت حضرت علی | |
| 1 shavval | Eid Al Fitr | عید فطر | The end of the holy month of Ramadan . |
| 25 shavval | The suffering of Imam Jafar | شهادت امام جعفر صادق | |
| 10 zulchidha | Eid al adha | عید قربان | Feast of Sacrifice (Eid al-Adha). |
| 18 zulchidha | Aide Gadir Hom | عید غدیر |
Public Holidays
- Chaharshanbe Suri - bonfire before the winter solstice
- Yalda - Winter Solstice Night, Mithra 's Birthday
- Mehregan - personal day of Mithra
Other holidays
- Veteran's Day in Iran
- Veterinary Day in Iran
- Iran Air Force Day
- Day of the naval forces of Iran
- Day of villages and peoples in Iran
- Book Day in Iran
- Day of veneration of saints and shrines (Iran)
- Agricultural Jihad Day
- Law Enforcement Force Day in Iran
- Insurance Day in Iran
- Student Day in Iran
- Theater Day in Iran
- Export Day in Iran