Islamic Hijri Calendar For December - 640 Hijri
| Western Date | Day of Week | Hijri Date |
|---|
| 1-December-640 | Friday | 11-Dhu al-Hijjah-19 |
| 2-December-640 | Saturday | 12-Dhu al-Hijjah-19 |
| 3-December-640 | Sunday | 13-Dhu al-Hijjah-19 |
| 4-December-640 | Monday | 14-Dhu al-Hijjah-19 |
| 5-December-640 | Tuesday | 15-Dhu al-Hijjah-19 |
| 6-December-640 | Wednesday | 16-Dhu al-Hijjah-19 |
| 7-December-640 | Thursday | 17-Dhu al-Hijjah-19 |
| 8-December-640 | Friday | 18-Dhu al-Hijjah-19 |
| 9-December-640 | Saturday | 19-Dhu al-Hijjah-19 |
| 10-December-640 | Sunday | 20-Dhu al-Hijjah-19 |
| 11-December-640 | Monday | 21-Dhu al-Hijjah-19 |
| 12-December-640 | Tuesday | 22-Dhu al-Hijjah-19 |
| 13-December-640 | Wednesday | 23-Dhu al-Hijjah-19 |
| 14-December-640 | Thursday | 24-Dhu al-Hijjah-19 |
| 15-December-640 | Friday | 25-Dhu al-Hijjah-19 |
| 16-December-640 | Saturday | 26-Dhu al-Hijjah-19 |
| 17-December-640 | Sunday | 27-Dhu al-Hijjah-19 |
| 18-December-640 | Monday | 28-Dhu al-Hijjah-19 |
| 19-December-640 | Tuesday | 29-Dhu al-Hijjah-19 |
| 20-December-640 | Wednesday | 1-Muharram-20 |
| 21-December-640 | Thursday | 2-Muharram-20 |
| 22-December-640 | Friday | 3-Muharram-20 |
| 23-December-640 | Saturday | 4-Muharram-20 |
| 24-December-640 | Sunday | 5-Muharram-20 |
| 25-December-640 | Monday | 6-Muharram-20 |
| 26-December-640 | Tuesday | 7-Muharram-20 |
| 27-December-640 | Wednesday | 8-Muharram-20 |
| 28-December-640 | Thursday | 9-Muharram-20 |
| 29-December-640 | Friday | 10-Muharram-20 |
| 30-December-640 | Saturday | 11-Muharram-20 |
| 31-December-640 | Sunday | 12-Muharram-20 |