| Ramadan Begins | Observance |  |
| March Equinox | Season | |
| Eid al-Fitr (End of Ramadan) | National Holiday | |
| Eid al-Fitr (End of Ramadan) Holiday | National Holiday | |
| Eid al-Fitr (End of Ramadan) Holiday | National Holiday | |
| Eid al-Fitr (End of Ramadan) Holiday | National Holiday | |
| Eid al-Adha | National Holiday | |
| June Solstice | Season | |
| Muharram / Islamic New Year | Observance | |
| Mawlid / Prophet's Birthday | Observance | |
| September Equinox | Season | |
| Saudi National Day | National Holiday | |
| December Solstice | Season | |
