IRST to Sayyan Time Converter
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Quick answers
Selected conversion
3:30 pm15:30 IRST (UTC+3:30), Oct 18, 2026 = 3:00 pm15:00 AST (UTC+3), Oct 18, 2026
IRST is 30 minutes ahead of Sayyān.
How the time difference changes
IRST is 30 minutes ahead of Sayyan year-round.
Working hours of 9:00 am to 6:00 pm in IRST correspond to 8:30 am to 5:30 pm in Sayyan.Working hours of 09:00 to 18:00 in IRST correspond to 08:30 to 17:30 in Sayyan.
Compare IRST time with Sayyan time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Iran Standard Time is 30 minutes ahead of AST (Arabia Standard Time).
3:30 pm15:30 in IRST is 3:00 pm15:00 in Sayyan, Yemen
IRST to Sayyān call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in IRST which corresponds to 9am-5:30pm09:00-17:30 in Sayyān
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
3:00 pm15:00 AST (Arabia Standard Time) (Sayyan, Yemen). Offset UTC +3:00 hours
3:30 pm15:30 IRST / 3:00 pm15:00 Sayyan, Yemen
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
| IRST | Sayyan, Yemen |
|---|---|
| 11:30pm previous day | |
| 12:30am | |
| 1:30am | |
| 2:30am | |
| 3:30am | |
| 4:30am | |
| 5:30am | |
| 6:30am | |
| 7:30am | |
| 8:30am | |
| 9:30am | |
| 10:30am | |
| 11:30am | |
| 12:30pm | |
| 1:30pm | |
| 2:30pm | |
| 3:30pm | |
| 4:30pm | |
| 5:30pm | |
| 6:30pm | |
| 7:30pm | |
| 8:30pm | |
| 9:30pm | |
| 10:30pm | |
| 23:30 previous day | |
| 00:30 | |
| 01:30 | |
| 02:30 | |
| 03:30 | |
| 04:30 | |
| 05:30 | |
| 06:30 | |
| 07:30 | |
| 08:30 | |
| 09:30 | |
| 10:30 | |
| 11:30 | |
| 12:30 | |
| 13:30 | |
| 14:30 | |
| 15:30 | |
| 16:30 | |
| 17:30 | |
| 18:30 | |
| 19:30 | |
| 20:30 | |
| 21:30 | |
| 22:30 |
Iran Standard Time
Offset: IRST is 3 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Iran
Principal Cities: The largest city in the IRST time zone is Tehran in Iran, with about 7.153 million people. Other major cities in this time zone include Mashhad, Isfahan, Karaj, Tabriz.
Daylight Saving: Clocks in Iran Standard Time (IRST) do not change for daylight saving time, so IRST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
IRST representations, usage and related time zones
- +0330 - basic
- +03:30 - extended
- +0330 - sign character (+) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates an offset of three hours and thirty minutes to the east of the zero meridian.