Islamic Hijri Calendar For December - 660 Hijri
| Western Date | Day of Week | Hijri Date |
| 1-December-660 | Tuesday | 22-Rajab-40 |
| 2-December-660 | Wednesday | 23-Rajab-40 |
| 3-December-660 | Thursday | 24-Rajab-40 |
| 4-December-660 | Friday | 25-Rajab-40 |
| 5-December-660 | Saturday | 26-Rajab-40 |
| 6-December-660 | Sunday | 27-Rajab-40 |
| 7-December-660 | Monday | 28-Rajab-40 |
| 8-December-660 | Tuesday | 29-Rajab-40 |
| 9-December-660 | Wednesday | 30-Rajab-40 |
| 10-December-660 | Thursday | 1-Shaban-40 |
| 11-December-660 | Friday | 2-Shaban-40 |
| 12-December-660 | Saturday | 3-Shaban-40 |
| 13-December-660 | Sunday | 4-Shaban-40 |
| 14-December-660 | Monday | 5-Shaban-40 |
| 15-December-660 | Tuesday | 6-Shaban-40 |
| 16-December-660 | Wednesday | 7-Shaban-40 |
| 17-December-660 | Thursday | 8-Shaban-40 |
| 18-December-660 | Friday | 9-Shaban-40 |
| 19-December-660 | Saturday | 10-Shaban-40 |
| 20-December-660 | Sunday | 11-Shaban-40 |
| 21-December-660 | Monday | 12-Shaban-40 |
| 22-December-660 | Tuesday | 13-Shaban-40 |
| 23-December-660 | Wednesday | 14-Shaban-40 |
| 24-December-660 | Thursday | 15-Shaban-40 |
| 25-December-660 | Friday | 16-Shaban-40 |
| 26-December-660 | Saturday | 17-Shaban-40 |
| 27-December-660 | Sunday | 18-Shaban-40 |
| 28-December-660 | Monday | 19-Shaban-40 |
| 29-December-660 | Tuesday | 20-Shaban-40 |
| 30-December-660 | Wednesday | 21-Shaban-40 |
| 31-December-660 | Thursday | 22-Shaban-40 |
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