The Islamic calendar is a lunar calendar which is based on the movement of the moon, and each month starts the observance of a new moon for the first time.
There are 12 months, and each month has 29 or 30 days in the Islamic calendar, so each year has 354 days in a common year or 355 days in a leap year, which is 11 days shorter than the Gregorian calendar year.
| # | Month Name | Days |
|---|---|---|
| 1 | Muharram | 29/30 |
| 2 | Safar | 29/30 |
| 3 | Rabi' al-awwal | 29/30 |
| 4 | Rabi' al-thani | 29/30 |
| 5 | Jumada al-awwal | 29/30 |
| 6 | Jumada al-thani | 29/30 |
| 7 | Rajab | 29/30 |
| 8 | Sha'ban | 29/30 |
| 9 | Ramadan | 29/30 |
| 10 | Shawwal | 29/30 |
| 11 | Dhu al-Qi'dah | 29/30 |
| 12 | Dhu al-Hijjah | 29/30 |
