Ramadan 40 — Hijri to Gregorian
| Hijri Day | Hijri Month & Year | Western Date | Day of Week |
|---|---|---|---|
| 1 | Ramadan, 40 | 10-January-661 | Thursday |
| 2 | Ramadan, 40 | 11-January-661 | Friday |
| 3 | Ramadan, 40 | 12-January-661 | Saturday |
| 4 | Ramadan, 40 | 13-January-661 | Sunday |
| 5 | Ramadan, 40 | 14-January-661 | Monday |
| 6 | Ramadan, 40 | 15-January-661 | Tuesday |
| 7 | Ramadan, 40 | 16-January-661 | Wednesday |
| 8 | Ramadan, 40 | 17-January-661 | Thursday |
| 9 | Ramadan, 40 | 18-January-661 | Friday |
| 10 | Ramadan, 40 | 19-January-661 | Saturday |
| 11 | Ramadan, 40 | 20-January-661 | Sunday |
| 12 | Ramadan, 40 | 21-January-661 | Monday |
| 13 | Ramadan, 40 | 22-January-661 | Tuesday |
| 14 | Ramadan, 40 | 23-January-661 | Wednesday |
| 15 | Ramadan, 40 | 24-January-661 | Thursday |
| 16 | Ramadan, 40 | 25-January-661 | Friday |
| 17 | Ramadan, 40 | 26-January-661 | Saturday |
| 18 | Ramadan, 40 | 27-January-661 | Sunday |
| 19 | Ramadan, 40 | 28-January-661 | Monday |
| 20 | Ramadan, 40 | 29-January-661 | Tuesday |
| 21 | Ramadan, 40 | 30-January-661 | Wednesday |
| 22 | Ramadan, 40 | 31-January-661 | Thursday |
| 23 | Ramadan, 40 | 1-February-661 | Friday |
| 24 | Ramadan, 40 | 2-February-661 | Saturday |
| 25 | Ramadan, 40 | 3-February-661 | Sunday |
| 26 | Ramadan, 40 | 4-February-661 | Monday |
| 27 | Ramadan, 40 | 5-February-661 | Tuesday |
| 28 | Ramadan, 40 | 6-February-661 | Wednesday |
| 29 | Ramadan, 40 | 7-February-661 | Thursday |
| 30 | Ramadan, 40 | 8-February-661 | Friday |
Baseline: Tabular (Kuwaiti) Hijri. Local moon-sighting may vary ±1 day.