Muharram 1666 — Hijri to Gregorian
| Hijri Day | Hijri Month & Year | Western Date | Day of Week |
|---|---|---|---|
| 1 | Muharram, 1666 | 18-December-2237 | Monday |
| 2 | Muharram, 1666 | 19-December-2237 | Tuesday |
| 3 | Muharram, 1666 | 20-December-2237 | Wednesday |
| 4 | Muharram, 1666 | 21-December-2237 | Thursday |
| 5 | Muharram, 1666 | 22-December-2237 | Friday |
| 6 | Muharram, 1666 | 23-December-2237 | Saturday |
| 7 | Muharram, 1666 | 24-December-2237 | Sunday |
| 8 | Muharram, 1666 | 25-December-2237 | Monday |
| 9 | Muharram, 1666 | 26-December-2237 | Tuesday |
| 10 | Muharram, 1666 | 27-December-2237 | Wednesday |
| 11 | Muharram, 1666 | 28-December-2237 | Thursday |
| 12 | Muharram, 1666 | 29-December-2237 | Friday |
| 13 | Muharram, 1666 | 30-December-2237 | Saturday |
| 14 | Muharram, 1666 | 31-December-2237 | Sunday |
| 15 | Muharram, 1666 | 1-January-2238 | Monday |
| 16 | Muharram, 1666 | 2-January-2238 | Tuesday |
| 17 | Muharram, 1666 | 3-January-2238 | Wednesday |
| 18 | Muharram, 1666 | 4-January-2238 | Thursday |
| 19 | Muharram, 1666 | 5-January-2238 | Friday |
| 20 | Muharram, 1666 | 6-January-2238 | Saturday |
| 21 | Muharram, 1666 | 7-January-2238 | Sunday |
| 22 | Muharram, 1666 | 8-January-2238 | Monday |
| 23 | Muharram, 1666 | 9-January-2238 | Tuesday |
| 24 | Muharram, 1666 | 10-January-2238 | Wednesday |
| 25 | Muharram, 1666 | 11-January-2238 | Thursday |
| 26 | Muharram, 1666 | 12-January-2238 | Friday |
| 27 | Muharram, 1666 | 13-January-2238 | Saturday |
| 28 | Muharram, 1666 | 14-January-2238 | Sunday |
| 29 | Muharram, 1666 | 15-January-2238 | Monday |
| 30 | Muharram, 1666 | 16-January-2238 | Tuesday |
Baseline: Tabular (Kuwaiti) Hijri. Local moon-sighting may vary ±1 day.