IRST to PT Converter
Compare IRST time with PT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Iran Standard Time is 11 hours and 30 minutes ahead of Pacific Time
3:30 pm15:30 in IRST is 4:00 am04:00 in PT
IRST to PT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm in IRST which corresponds to 7am-8am in PT
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
4:00 am04:00 Pacific Time (PT). Offset UTC -8:00 hours
3:30 pm15:30 IRST / 4:00 am04:00 PT
| IRST | PT |
|---|---|
| 12am (midnight) | 12:30 pm |
| 1am | 1:30 pm |
| 2am | 2:30 pm |
| 3am | 3:30 pm |
| 4am | 4:30 pm |
| 5am | 5:30 pm |
| 6am | 6:30 pm |
| 7am | 7:30 pm |
| 8am | 8:30 pm |
| 9am | 9:30 pm |
| 10am | 10:30 pm |
| 11am | 11:30 pm |
| 12pm (noon) | 12:30 am |
| 1pm | 1:30 am |
| 2pm | 2:30 am |
| 3pm | 3:30 am |
| 4pm | 4:30 am |
| 5pm | 5:30 am |
| 6pm | 6:30 am |
| 7pm | 7:30 am |
| 8pm | 8:30 am |
| 9pm | 9:30 am |
| 10pm | 10:30 am |
| 11pm | 11:30 am |
| 00:00 | 12:30 |
| 01:00 | 13:30 |
| 02:00 | 14:30 |
| 03:00 | 15:30 |
| 04:00 | 16:30 |
| 05:00 | 17:30 |
| 06:00 | 18:30 |
| 07:00 | 19:30 |
| 08:00 | 20:30 |
| 09:00 | 21:30 |
| 10:00 | 22:30 |
| 11:00 | 23:30 |
| 12:00 | 00:30 |
| 13:00 | 01:30 |
| 14:00 | 02:30 |
| 15:00 | 03:30 |
| 16:00 | 04:30 |
| 17:00 | 05:30 |
| 18:00 | 06:30 |
| 19:00 | 07:30 |
| 20:00 | 08:30 |
| 21:00 | 09:30 |
| 22:00 | 10:30 |
| 23:00 | 11:30 |
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.
Pacific Time
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries using this time zone: Canada, Mexico, United States.
Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del PacĂfico, PT - Zona Noroeste
PT representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
- Uniform - Military abbreviation for PT
- U - short form of 'Uniform'
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
