IRDT to PT Converter
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Quick answers
Selected conversion
3:30 pm15:30 IRST (UTC+3:30), Oct 17, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 17, 2026
IRST is 10 hours and 30 minutes ahead of PDT.
How the time difference changes
For most of the year, IRST is 10 hours and 30 minutes ahead of PT. From Nov 1, 2026 to Mar 14, 2027, IRST is 11 hours and 30 minutes ahead of PT.
For most of the year, working hours of 9:00 am to 6:00 pm in IRST correspond to 10:30 pm (previous day) to 7:30 am in PT. At other times of the year, working hours of 9:00 am to 6:00 pm in IRST correspond to 9:30 pm (previous day) to 6:30 am in PT.For most of the year, working hours of 09:00 to 18:00 in IRST correspond to 22:30 (previous day) to 07:30 in PT. At other times of the year, working hours of 09:00 to 18:00 in IRST correspond to 21:30 (previous day) to 06:30 in PT.
Compare IRDT 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 10 hours and 30 minutes ahead of Pacific Daylight Time.
3:30 pm15:30 in IRST is 5:00 am05:00 in PDT
IRST to PDT call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in IRST which corresponds to 8am-9am08:00-09:00 in PDT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
3:30 pm15:30 IRST / 5:00 am05:00 PDT
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| IRST | PT |
|---|---|
| 1:30pm previous day | |
| 2:30pm previous day | |
| 3:30pm previous day | |
| 4:30pm previous day | |
| 5:30pm previous day | |
| 6:30pm previous day | |
| 7:30pm previous day | |
| 8:30pm previous day | |
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| 10:30pm previous day | |
| 11:30pm previous day | |
| 12:30am | |
| 1:30am | |
| 2:30am | |
| 3:30am | |
| 4:30am | |
| 5:30am | |
| 6:30am | |
| 7:30am | |
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| 11:30am | |
| 12:30pm | |
| 13:30 previous day | |
| 14:30 previous day | |
| 15:30 previous day | |
| 16:30 previous day | |
| 17:30 previous day | |
| 18:30 previous day | |
| 19:30 previous day | |
| 20:30 previous day | |
| 21:30 previous day | |
| 22:30 previous day | |
| 23:30 previous day | |
| 00:30 | |
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| 04:30 | |
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| 08:30 | |
| 09:30 | |
| 10:30 | |
| 11:30 | |
| 12:30 |
Iran Daylight Time
Offset: IRDT is 4 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
IRDT representations, usage and related time zones
- +0430 - basic
- +04:30 - extended
- +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
- AFT - Afghanistan Time
- IRDT - Iran Daylight Time
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 North America. 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 United States and the Northwestern part of Mexico. From November 1, 2026, most of British Columbia in Canada keeps UTC-7 all year instead.
Countries using this time zone: Mexico, United States
Principal Cities: The largest city in the PT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, 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