Clocks
Time difference: Singapore and Tehran
Tehran is 4 hours 30 minutes behind Singapore.
Singapore UTC+8
00:00:00
Wednesday, September 30, 2026
Syncing…
Tehran, Iran UTC+3:30
00:00:00
Wednesday, September 30, 2026
Syncing…
Hour by hour
| Singapore | Tehran |
|---|---|
| 00:00 | 19:30 (previous day) |
| 01:00 | 20:30 (previous day) |
| 02:00 | 21:30 (previous day) |
| 03:00 | 22:30 (previous day) |
| 04:00 | 23:30 (previous day) |
| 05:00 | 00:30 |
| 06:00 | 01:30 |
| 07:00 | 02:30 |
| 08:00 | 03:30 |
| 09:00 | 04:30 |
| 10:00 | 05:30 |
| 11:00 | 06:30 |
| 12:00 | 07:30 |
| 13:00 | 08:30 |
| 14:00 | 09:30 |
| 15:00 | 10:30 |
| 16:00 | 11:30 |
| 17:00 | 12:30 |
| 18:00 | 13:30 |
| 19:00 | 14:30 |
| 20:00 | 15:30 |
| 21:00 | 16:30 |
| 22:00 | 17:30 |
| 23:00 | 18:30 |
When the difference changes
Neither city changes its clocks in 2026 or 2027, so the difference stays the same all year.
Singapore uses the Asia/Singapore time zone and Tehran uses Asia/Tehran. The times above come from the IANA time zone database.