Iran to PST
-11h 30mIran
IRSTSOURCEPST
PSTGreen rows indicate typical business hours (9 AM - 5 PM)
IRST and PST on the World Map
The map below highlights the IRST (Iran Standard Time) and PST (Pacific Standard Time) timezone regions across the globe.
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 – 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.
Comparing Time Zones: Iran and PST
Iran runs on Iran Standard Time (IRST) at UTC+03:30. PST runs on Pacific Standard Time (PST) at UTC-08:00. That puts Iran 11 hours 30 minutes behind PST — a difference of -11h 30m at the current offsets.
In practice, when it is 9:00 AM in Iran it is 9:30 PM in PST on the previous day. Midnight in Iran is 12:30 PM in PST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Iran to PST time conversion table
| Iran (IRST) | PST (PST) | Day |
|---|---|---|
| 12:00 AM | 12:30 PM | previous day |
| 6:00 AM | 6:30 PM | previous day |
| 7:00 AM | 7:30 PM | previous day |
| 8:00 AM | 8:30 PM | previous day |
| 9:00 AM | 9:30 PM | previous day |
| 12:00 PM | 12:30 AM | same day |
| 3:00 PM | 3:30 AM | same day |
| 5:00 PM | 5:30 AM | same day |
| 6:00 PM | 6:30 AM | same day |
| 9:00 PM | 9:30 AM | same day |
Why people convert Iran to PST time
- Scheduling a call from Iran to PST: a 10:00 AM start in Iran lands at 10:30 PM in PST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -11h 30m gap: Iran and PST 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 PST is 9:30 PM in Iran.
- Watching a live event or market open: Iran viewers need 9:30 PM in PST to catch a 9:00 AM start there, and 11:30 AM if the event is anchored to Iran.
- Always state the zone abbreviation, not just the hour. "3:00 PM IRST" 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 Iran takes the early slot, the next week PST does.
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.
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.
Best time to call between Iran and PST
With a -11h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. PST opens at 9:00 AM PST, which is 9:30 PM in Iran, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Iran and PST have no shared working hours because of the -11h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Iran is 11 hours 30 minutes behind PST (IRST UTC+03:30 → PST UTC-08:00). 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
Iran
Does not observe DST
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
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 Iran and PST?
Iran (IRST, UTC+03:30) is 11 hours 30 minutes behind PST (PST, UTC-08:00). The gap is currently -11h 30m.
How do I convert Iran time to PST time?
Add -11h 30m to Iran local time. For example, 9:00 AM in Iran is 9:30 PM in PST (previous day).
What time is it in PST right now?
PST uses PST at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -11h 30m offset from Iran.
What is the best time to call PST from Iran?
There is no shared working-hours window because of the -11h 30m gap. The closest option is 1:00 PM in Iran, which is 1:30 AM in PST.
Which is behind, Iran or PST?
Iran is 11 hours 30 minutes behind PST. When it is 12:00 PM in Iran it is 12:30 AM in PST.
Do Iran and PST use different time zones?
Iran (Iran) uses IRST at UTC+03:30, while PST uses PST at UTC-08:00. The IANA identifiers are Asia/Tehran and America/Los_Angeles.
Does daylight saving time affect the Iran–PST difference?
Neither zone observes daylight saving time, so the -11h 30m offset between Iran and PST is fixed all year.
Which other cities share Iran's time zone?
IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
Which countries use IRST, Iran's zone?
IRST is used in Iran.
Is there a day difference between Iran and PST?
Not normally. The -11h 30m gap only pushes the date over the previous day.
What is the time difference between Iran and PST?
PST is -11h 30m from Iran.
What timezone is Iran in?
Iran operates on its local timezone.
What timezone is PST in?
PST operates on its local timezone.
Which countries use IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting facts about IRST?
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).
Which cities are in the PST timezone?
Major cities in the PST timezone include Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento.
What is the UTC offset for PST?
Pacific Standard Time (PST) is at UTC-08:00. During daylight saving time, it shifts to PDT.
What should I know about the PST timezone?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
When is it midnight in Iran, what time is it in PST?
When it is 12:00 AM (midnight) in Iran (IRST), it is -11h 30m later in PST (PST).
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