Los Angeles to Tehran
+10h 30mLos Angeles
PDTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and IRST on the World Map
The map below highlights the PDT (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.
About Los Angeles
WikipediaLos Angeles operates on Pacific Time (PST/PDT), 3 hours behind New York. As the entertainment capital, LA time is important for media and tech industries.
Los Angeles is the entertainment capital of the world, home to Hollywood and major film studios.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
Understanding the +10h 30m Gap: Los Angeles vs Tehran
Los Angeles runs on Pacific Daylight Time (PDT) at UTC-07:00, currently observing daylight saving time. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Los Angeles 10 hours 30 minutes ahead of Tehran — a difference of +10h 30m at the current offsets.
In practice, when it is 9:00 AM in Los Angeles it is 7:30 PM in Tehran. Midnight in Los Angeles is 10:30 AM in Tehran.Los Angeles observes daylight saving time while Tehran does not, so the gap narrows or widens by an hour part of the year.
Los Angeles to Tehran time conversion table
| Los Angeles (PDT) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 10:30 AM | same day |
| 6:00 AM | 4:30 PM | same day |
| 7:00 AM | 5:30 PM | same day |
| 8:00 AM | 6:30 PM | same day |
| 9:00 AM | 7:30 PM | same day |
| 12:00 PM | 10:30 PM | same day |
| 3:00 PM | 1:30 AM | next day |
| 5:00 PM | 3:30 AM | next day |
| 6:00 PM | 4:30 AM | next day |
| 9:00 PM | 7:30 AM | next day |
Why people convert Los Angeles to Tehran time
- Scheduling a call from Los Angeles to Tehran: a 10:00 AM start in Los Angeles lands at 8:30 PM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +10h 30m gap: Los Angeles and Tehran 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 Tehran is 7:30 PM in Los Angeles.
- Coordinating a Los Angeles-based team with Tehran contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +10h 30m gap is not.
- With a +10h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Los Angeles takes the early slot, the next week Tehran does.
- Los Angeles: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +10h 30m gap.
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 Los Angeles and Tehran
With a +10h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Tehran opens at 9:00 AM IRST, which is 7:30 PM in Los Angeles, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Los Angeles and Tehran have no shared working hours because of the +10h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Los Angeles is 10 hours 30 minutes ahead of Tehran (PDT UTC-07:00 → 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
Los Angeles
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Tehran
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 Los Angeles and Tehran?
Los Angeles (PDT, UTC-07:00) is 10 hours 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +10h 30m.
How do I convert Los Angeles time to Tehran time?
Add +10h 30m to Los Angeles local time. For example, 9:00 AM in Los Angeles is 7:30 PM in Tehran.
What time is it in Tehran right now?
Tehran 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 +10h 30m offset from Los Angeles.
What is the best time to call Tehran from Los Angeles?
There is no shared working-hours window because of the +10h 30m gap. The closest option is 1:00 PM in Los Angeles, which is 11:30 PM in Tehran.
Which is ahead, Los Angeles or Tehran?
Los Angeles is 10 hours 30 minutes ahead of Tehran. When it is 12:00 PM in Los Angeles it is 10:30 PM in Tehran.
Do Los Angeles and Tehran use different time zones?
Los Angeles (USA) uses PDT at UTC-07:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are America/Los_Angeles and Asia/Tehran.
Does daylight saving time affect the Los Angeles–Tehran difference?
Yes at the moment: Los Angeles is on daylight saving time and Tehran is not, so the +10h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Los Angeles's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PDT, Los Angeles's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between Los Angeles and Tehran?
Not normally. The +10h 30m gap only pushes the date over for late-evening times.
What is the time difference between Los Angeles and Tehran?
Tehran is +10h 30m from Los Angeles.
What timezone is Los Angeles in?
Los Angeles operates on Pacific Time (PST/PDT), 3 hours behind New York. As the entertainment capital, LA time is important for media and tech industries.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What are the business hours in Los Angeles?
Standard business hours in Los Angeles are 9:00 AM - 5:00 PM PST.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
What is the best time to schedule a call between Los Angeles and Tehran?
The best overlap for a call is when both cities are in business hours. Los Angeles works 9:00 AM - 5:00 PM PST and Tehran works 8:00 AM - 4:00 PM IRST (+10h 30m difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Los Angeles and Tehran?
Los Angeles uses USD ($) while Tehran uses IRR (﷼). Check current exchange rates when planning travel or business between these cities.
How do Los Angeles and Tehran compare in size?
Los Angeles has a population of approximately 4 million (metro: 13.2 million), while Tehran has approximately 9.4 million (metro: 16.8 million).
What are the major landmarks in Los Angeles and Tehran?
Los Angeles is known for Hollywood Sign, Santa Monica Pier, Griffith Observatory. Tehran is famous for Azadi Tower, Golestan Palace, Grand Bazaar.
Do Los Angeles and Tehran have stock exchanges?
Yes. Los Angeles has the N/A (Uses NYSE/NASDAQ) and Tehran has the TSE (Tehran Stock Exchange). The +10h 30m time difference affects trading hour overlaps between these exchanges.
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 Los Angeles, what time is it in Tehran?
When it is 12:00 AM (midnight) in Los Angeles (PST), it is +10h 30m later in Tehran (IRST).
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