| Hijri Month | Starts On | Day of Week | Days in Month |
|---|---|---|---|
| Muharram 40 | 17-May-660 | Sunday | 29 days. |
| Safar 40 | 15-June-660 | Monday | 30 days. |
| Rabi Al-Awwal 40 | 15-July-660 | Wednesday | 29 days. |
| Rabi Al-Thani 40 | 13-August-660 | Thursday | 30 days. |
| Jumada Al-Awwal 40 | 12-September-660 | Saturday | 30 days. |
| Jumada Al-Thani 40 | 12-October-660 | Monday | 29 days. |
| Rajab 40 | 10-November-660 | Tuesday | 30 days. |
| Shaban 40 | 10-December-660 | Thursday | 29 days. |
| Ramadan 40 | 8-January-661 | Friday | 30 days. |
| Shawwal 40 | 7-February-661 | Sunday | 29 days. |
| Dhu Al-Qidah 40 | 8-March-661 | Monday | 29 days. |
| Dhu Al-Hijjah 40 | 6-April-661 | Tuesday | 30 days. |