The Islamic Hijri calendar is a purely lunar calendar of 12 months totalling 354 or 355 days — approximately 11 days shorter than the Gregorian solar year. Islamic events and holy months shift earlier by about 11 days each year, cycling through all seasons over approximately 33 years. The calendar began with the Hijra (migration) of Prophet Muhammad ﷺ from Mecca to Medina in 622 CE.
The first month of the Islamic year and one of the four sacred months. Fasting on the 10th (Ashura) is highly recommended.
The second month of the Islamic calendar. The name derives from "empty" — ancient Arabs left their homes during this month. No major Islamic events.
The month in which Prophet Muhammad ﷺ was born (and passed away). A blessed month celebrated widely across the Muslim world.
The fourth month, also known as Rabi al-Akhir. No major Islamic events.
The fifth month. Named for the drying up of water in ancient Arabia. No major Islamic events.
The sixth month, also known as Jumada al-Akhira. Marks the midpoint of the Islamic year. No major Islamic events.
One of the four sacred months (Ashhurul Hurum). Fighting is forbidden. Allah multiplies the reward for good deeds. The Night Journey is observed in this month.
The month before Ramadan. Prophet Muhammad ﷺ used to fast extensively in Sha'ban. Deeds of the whole year are presented to Allah in this month.
The holiest month of the year. Fasting (Sawm) is the Fourth Pillar of Islam and is obligatory for all adult Muslims. The Quran was first revealed in Ramadan on the Night of Power (Laylat al-Qadr).
Eid ul-Fitr falls on the 1st day of Shawwal — the celebration marking the end of Ramadan. Fasting the 6 days of Shawwal carries the reward of fasting the entire year.
One of the four sacred months. Ancient Arabs ceased travel and fighting. Hajj preparations begin as pilgrims journey toward Mecca.
The month of Hajj — the Fifth Pillar of Islam. Contains the best ten days of the year for worship. Eid ul-Adha commemorates the sacrifice of Prophet Ibrahim ﷺ.
Use the Date Converter on this page to convert any Gregorian (CE) date to its Hijri (AH) equivalent, or convert any Hijri date back to Gregorian. Enter a date and click Convert. Results use the astronomical calculation method (may differ by ±1 day from local moon sighting).
| Event | Hijri Date | Month |
|---|---|---|
| Islamic New Year | 1st Muharram | Month 1 |
| Day of Ashura | 10th Muharram | Month 1 |
| Mawlid al-Nabi ﷺ | 12th Rabi al-Awwal | Month 3 |
| Laylat al-Isra' wal-Mi'raj | 27th Rajab | Month 7 |
| Laylat al-Bara'at | 15th Sha'ban | Month 8 |
| Start of Ramadan Fasting | 1st Ramadan | Month 9 |
| Laylat al-Qadr | 27th Ramadan (likely) | Month 9 |
| Eid ul-Fitr | 1st Shawwal | Month 10 |
| Day of Arafah | 9th Dhul Hijjah | Month 12 |
| Eid ul-Adha | 10th Dhul Hijjah | Month 12 |
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