Muharram 18 — Hijri to Gregorian
| Hijri Day | Hijri Month & Year | Western Date | Day of Week |
|---|---|---|---|
| 1 | Muharram, 18 | 14-January-639 | Monday |
| 2 | Muharram, 18 | 15-January-639 | Tuesday |
| 3 | Muharram, 18 | 16-January-639 | Wednesday |
| 4 | Muharram, 18 | 17-January-639 | Thursday |
| 5 | Muharram, 18 | 18-January-639 | Friday |
| 6 | Muharram, 18 | 19-January-639 | Saturday |
| 7 | Muharram, 18 | 20-January-639 | Sunday |
| 8 | Muharram, 18 | 21-January-639 | Monday |
| 9 | Muharram, 18 | 22-January-639 | Tuesday |
| 10 | Muharram, 18 | 23-January-639 | Wednesday |
| 11 | Muharram, 18 | 24-January-639 | Thursday |
| 12 | Muharram, 18 | 25-January-639 | Friday |
| 13 | Muharram, 18 | 26-January-639 | Saturday |
| 14 | Muharram, 18 | 27-January-639 | Sunday |
| 15 | Muharram, 18 | 28-January-639 | Monday |
| 16 | Muharram, 18 | 29-January-639 | Tuesday |
| 17 | Muharram, 18 | 30-January-639 | Wednesday |
| 18 | Muharram, 18 | 31-January-639 | Thursday |
| 19 | Muharram, 18 | 1-February-639 | Friday |
| 20 | Muharram, 18 | 2-February-639 | Saturday |
| 21 | Muharram, 18 | 3-February-639 | Sunday |
| 22 | Muharram, 18 | 4-February-639 | Monday |
| 23 | Muharram, 18 | 5-February-639 | Tuesday |
| 24 | Muharram, 18 | 6-February-639 | Wednesday |
| 25 | Muharram, 18 | 7-February-639 | Thursday |
| 26 | Muharram, 18 | 8-February-639 | Friday |
| 27 | Muharram, 18 | 9-February-639 | Saturday |
| 28 | Muharram, 18 | 10-February-639 | Sunday |
| 29 | Muharram, 18 | 11-February-639 | Monday |
| 30 | Muharram, 18 | 12-February-639 | Tuesday |
Baseline: Tabular (Kuwaiti) Hijri. Local moon-sighting may vary ±1 day.