List of observances set by the Solar Hijri calendar
Dates in this table are determined by when the March Equinox falls. It will fall on March 20 from 2018 to
2023.
| Holiday date | Holiday name | Description | March equinox on March 19 | March Equinox on March 20 | March Equinox on March 21 |
|---|---|---|---|---|---|
| 1–4 Farvardin | Nowruz | New Year celebration of Spring. Public holiday in Iran. Note: Nowruz is the day after the March equinox. | March 20–24 | March 21–25 | March 22–26 |
| 12 Farvardin | Islamic Republic Day | Public holiday in Iran | March 31 | April 1 | April 2 |
| 13 Farvardin | Sizdah Bedar | Public holiday in Iran | April 1 | April 2 | April 3 |
| 3 Ordibehesht | Teacher's Day in Afghanistan | Not an official observance | April 22 | April 23 | April 24 |
| 12 Ordibehesht | Teacher's Day in Iran | The Islamic Republic government changed the original date to coincide with the assassination of Morteza Motahhari on 1 May 1979. | May 1 | May 2 | May 3 |
| 14 Khordad | Anniversary of the Death of Khomeini | Public holiday in Iran | June 3 | June 4 | June 5 |
| 15 Khordad | Anniversary Revolt of Khordad 15 | Public holiday in Iran | June 4 | June 5 | June 6 |
| 13 Tir | Tirgan | Mid-summer festival | July 3 | July 4 | July 5 |
| 7 Mordad | Amordadegan festival | 127 days after Nowruz | July 28 | July 29 | July 30 |
| 1 Shahrivar | National Doctors' Day in Iran | Avicenna's birthday | August 22 | August 23 | August 24 |
| 3 Shahrivar | Day of Combat Against British Colonialism | Public holiday in Iran | August 24 | August 25 | August 26 |
| 18 Shahrivar | Martyrs' Day (Afghanistan) | Celebrated as Haftai Shahid, or "Martyr Week". It is also observed as "Massoud Day" | September 8 | September 9 | September 10 |
| 31 Sharivar | Start of Sacred Defence Week | Also called Holy Defence Week. Commemoration of the 1980-1988 Iran-Iraq war. | September 21 | September 22 | September 23 |
| 10 Mehr | Mehregan | Zoroastrian festival celebrated in Autumn | October 1 | October 2 | October 3 |
| 7 Aban | Cyrus the Great Day | Unofficial holiday commemorating Cyrus the Great | October 28 | October 29 | October 30 |
| 16 Azar | Student Day (Iran) | Anniversary of the murder of three students of University of Tehran on December 7, 1953. | December 6 | December 7 | December 8 |
| 30 Azar | Yaldā Night | Winter festival celebrated on the December solstice. Also celebrated in Azerbaijan, Afghanistan, Kurdistan, Tajikistan, Turkey (by Kurds and Azeris), and in Pakistan (by Pashtuns and Balochs) | December 20 | December 21 | December 22 |
| 1 Dey | Khorram rooz | Ancient Persian considered this the first day of their New Year | December 21 | December 22 | December 23 |
| 10 Bahman | Sadeh | 50 days before Nowruz | January 29 | January 30 | January 31 |
| 22 Bahman | Anniversary of Islamic Revolution | Public holiday in Iran | February 10 | February 11 | February 12 |
| 5 Esfand | Sepandārmazgān | Described as "Persian Day of Love" | February 23 | February 24 | February 25 |
| 15 Esfand | Arbor Day in Iran | First day of the Natural Recyclable Resources Week | March 5 | March 6 | March 7 |
| Eve of the last Wednesday before Nowruz | Chaharshanbe Suri | Also observed in Azerbaijan, Afghanistan, Iraqi Kurdistan, Tajikistan and in Turkey (by Azeris and Kurds) | varies | varies | varies |
| 29 Esfand | Nationalization of Oil Industry | Public holiday in Iran | March 19 | March 20 | March 21 |