Riyadh to IRST Time Converter
Quick answers
Riyadh is 30 minutes behind IRST year-round.
Working hours of 9:00 am to 5:00 pm in Riyadh correspond to 9:30 am to 5:30 pm in IRST.
Compare Riyadh time with IRST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
AST (Arabia Standard Time) is 0 hours and 30 minutes behind Iran Standard Time
3:00 pm15:00 in Riyadh, Saudi Arabia is 3:30 pm15:30 in IRST
Riyadh to IRST call time
Best time for a conference call or a meeting is between 9am-4:30pm in Riyadh which corresponds to 9:30am-5pm in IRST
3:00 pm15:00 AST (Arabia Standard Time) (Riyadh, Saudi Arabia). Offset UTC +3:00 hours
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
3:00 pm15:00 Riyadh, Saudi Arabia / 3:30 pm15:30 IRST
| Riyadh, Saudi Arabia | IRST |
|---|---|
| 12am (midnight) | 12:30 am |
| 1am | 1:30 am |
| 2am | 2:30 am |
| 3am | 3:30 am |
| 4am | 4:30 am |
| 5am | 5:30 am |
| 6am | 6:30 am |
| 7am | 7:30 am |
| 8am | 8:30 am |
| 9am | 9:30 am |
| 10am | 10:30 am |
| 11am | 11:30 am |
| 12pm (noon) | 12:30 pm |
| 1pm | 1:30 pm |
| 2pm | 2:30 pm |
| 3pm | 3:30 pm |
| 4pm | 4:30 pm |
| 5pm | 5:30 pm |
| 6pm | 6:30 pm |
| 7pm | 7:30 pm |
| 8pm | 8:30 pm |
| 9pm | 9:30 pm |
| 10pm | 10:30 pm |
| 11pm | 11:30 pm |
| 00:00 | 00:30 |
| 01:00 | 01:30 |
| 02:00 | 02:30 |
| 03:00 | 03:30 |
| 04:00 | 04:30 |
| 05:00 | 05:30 |
| 06:00 | 06:30 |
| 07:00 | 07:30 |
| 08:00 | 08:30 |
| 09:00 | 09:30 |
| 10:00 | 10:30 |
| 11:00 | 11:30 |
| 12:00 | 12:30 |
| 13:00 | 13:30 |
| 14:00 | 14:30 |
| 15:00 | 15:30 |
| 16:00 | 16:30 |
| 17:00 | 17:30 |
| 18:00 | 18:30 |
| 19:00 | 19:30 |
| 20:00 | 20:30 |
| 21:00 | 21:30 |
| 22:00 | 22:30 |
| 23:00 | 23:30 |
Riyadh Information
Time Zone
Riyadh Facts
Iran Standard Time
Offset: IRST is 3 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
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.
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.