PST to Iran
+11h 30mPST
PSTSOURCEIran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
PST and IRST on the World Map
The map below highlights the PST (Pacific Standard Time) and IRST (Iran Standard Time) timezone regions across the globe.
PST – Pacific Standard Time
UTC-08:00Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.
- •Silicon Valley and the world's biggest tech companies operate on Pacific Time.
- •The Hollywood film industry runs on PST/PDT.
- •PST is 3 hours behind EST, creating a significant business hours gap.
- •Vancouver, Canada's third-largest city, uses PST.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
PST to Iran Time Difference – Complete Guide
PST runs on Pacific Standard Time (PST) at UTC-08:00. Iran runs on Iran Standard Time (IRST) at UTC+03:30. That puts PST 11 hours 30 minutes ahead of Iran — a difference of +11h 30m at the current offsets.
In practice, when it is 9:00 AM in PST it is 8:30 PM in Iran. Midnight in PST is 11:30 AM in Iran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PST to Iran time conversion table
| PST (PST) | Iran (IRST) | Day |
|---|---|---|
| 12:00 AM | 11:30 AM | same day |
| 6:00 AM | 5:30 PM | same day |
| 7:00 AM | 6:30 PM | same day |
| 8:00 AM | 7:30 PM | same day |
| 9:00 AM | 8:30 PM | same day |
| 12:00 PM | 11:30 PM | same day |
| 3:00 PM | 2:30 AM | next day |
| 5:00 PM | 4:30 AM | next day |
| 6:00 PM | 5:30 AM | next day |
| 9:00 PM | 8:30 AM | next day |
Why people convert PST to Iran time
- Scheduling a call from PST to Iran: a 10:00 AM start in PST lands at 9:30 PM in Iran, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +11h 30m gap: PST and Iran have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Iran is 8:30 PM in PST.
- Keeping family and friends in sync: knowing that 8:00 PM in PST is 7:30 AM in Iran makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM PST" is unambiguous; "3 PM" across a +11h 30m gap is not.
- With a +11h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week PST takes the early slot, the next week Iran does.
About PST (Pacific Standard Time)
Pacific Standard Time (PST) covers the west coast of North America, including tech hubs like San Francisco and Seattle, and entertainment capital Los Angeles. The Pacific Time Zone is home to Silicon Valley and the world's largest technology companies. During summer, clocks advance to Pacific Daylight Time (PDT, UTC-07:00). PST is also observed in Baja California, Mexico.
About IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
Best time to call between PST and Iran
With a +11h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Iran opens at 9:00 AM IRST, which is 8:30 PM in PST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PST and Iran have no shared working hours because of the +11h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
PST is 11 hours 30 minutes ahead of Iran (PST UTC-08:00 → IRST UTC+03:30). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Iran
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between PST and Iran?
PST (PST, UTC-08:00) is 11 hours 30 minutes ahead of Iran (IRST, UTC+03:30). The gap is currently +11h 30m.
How do I convert PST time to Iran time?
Add +11h 30m to PST local time. For example, 9:00 AM in PST is 8:30 PM in Iran.
What time is it in Iran right now?
Iran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +11h 30m offset from PST.
What is the best time to call Iran from PST?
There is no shared working-hours window because of the +11h 30m gap. The closest option is 1:00 PM in PST, which is 12:30 AM in Iran.
Which is ahead, PST or Iran?
PST is 11 hours 30 minutes ahead of Iran. When it is 12:00 PM in PST it is 11:30 PM in Iran.
Do PST and Iran use different time zones?
PST uses PST at UTC-08:00, while Iran (Iran) uses IRST at UTC+03:30. The IANA identifiers are America/Los_Angeles and Asia/Tehran.
Does daylight saving time affect the PST–Iran difference?
Neither zone observes daylight saving time, so the +11h 30m offset between PST and Iran is fixed all year.
Which other cities share PST's time zone?
PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PST, PST's zone?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PST and Iran?
Not normally. The +11h 30m gap only pushes the date over for late-evening times.
What is the time difference between PST and Iran?
Iran is +11h 30m from PST.
What timezone is PST in?
PST operates on its local timezone.
What timezone is Iran in?
Iran operates on its local timezone.
Which countries use PST (Pacific Standard Time)?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PST observe daylight saving time?
Yes, PST switches to PDT during summer months.
What are some interesting facts about PST?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
Which cities are in the IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
When is it midnight in PST, what time is it in Iran?
When it is 12:00 AM (midnight) in PST (PST), it is +11h 30m later in Iran (IRST).
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