Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Vancouver to Tehran

+10h 30m

Vancouver

PDTSOURCE

Canada · UTC-07:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Tehran

IRST

Iran · UTC+03:30

HH10

MM30

22:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vancouver

Tehran

12:00 AM

10:30 AM

2:00 AM

12:30 PM

4:00 AM

2:30 PM

6:00 AM

4:30 PM

8:00 AM

6:30 PM

10:00 AM

8:30 PM

12:00 PM

10:30 PM

2:00 PM

12:30 AM+1

4:00 PM

2:30 AM+1

6:00 PM

4:30 AM+1

8:00 PM

6:30 AM+1

10:00 PM

8:30 AM+1

Green 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.

PDT Zone

→

IRST Zone

Explore all world timezones interactively →

PST – Pacific Standard Time

UTC-08:00

Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.

Countries in PST

United States (Pacific)Canada (British Columbia)Mexico (Baja California)

Major Cities in PST

Los AngelesSan FranciscoSeattleVancouverSan DiegoPortlandLas VegasSacramentoSan JoseTijuana

Key Facts about PST

•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.

Daylight Saving:Yes – switches to PDT

Learn more about PST on Wikipedia

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key 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).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST on Wikipedia

About Vancouver

Wikipedia

Vancouver operates on Pacific Time (PST/PDT), same as Los Angeles. As Canada's gateway to Asia, Vancouver bridges North American and Asian markets.

Population:675,000

Metro:2.6 million

Business Hours:9:00 AM - 5:00 PM PST

Currency:CAD (C$)

Stock Exchange:TSX-V (TSX Venture Exchange)

Key Landmarks

Stanley ParkCapilano Suspension BridgeGastownGranville IslandVancouver Art Gallery

Did You Know?

The city consistently ranks among the world's most livable cities.

Learn more about PDT timezone →

About Tehran

Wikipedia

Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.

Population:9.4 million

Metro:16.8 million

Business Hours:8:00 AM - 4:00 PM IRST

Currency:IRR (﷼)

Stock Exchange:TSE (Tehran Stock Exchange)

Key Landmarks

Azadi TowerGolestan PalaceGrand BazaarMilad TowerTabiat Bridge

Did You Know?

Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).

Learn more about IRST timezone →

Comparing Time Zones: Vancouver and Tehran

Vancouver 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 Vancouver 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 Vancouver it is 7:30 PM in Tehran. Midnight in Vancouver is 10:30 AM in Tehran.Vancouver observes daylight saving time while Tehran does not, so the gap narrows or widens by an hour part of the year.

Vancouver to Tehran time conversion table

Vancouver (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 Vancouver to Tehran time

Scheduling a call from Vancouver to Tehran: a 10:00 AM start in Vancouver lands at 8:30 PM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
Handling a +10h 30m gap: Vancouver 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 Vancouver.
Keeping family and friends in sync: knowing that 8:00 PM in Vancouver is 6:30 AM in Tehran makes it easy to avoid calling at 3 AM.

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 Vancouver takes the early slot, the next week Tehran 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 Vancouver 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 Vancouver, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Vancouver and Tehran have no shared working hours because of the +10h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.

Vancouver 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

Vancouver

☀ Currently in DST

Standard: UTC-08:00 · DST: UTC-07:00

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:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Vancouver and Tehran?

Vancouver (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 Vancouver time to Tehran time?

Add +10h 30m to Vancouver local time. For example, 9:00 AM in Vancouver 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 Vancouver.

What is the best time to call Tehran from Vancouver?

There is no shared working-hours window because of the +10h 30m gap. The closest option is 1:00 PM in Vancouver, which is 11:30 PM in Tehran.

Which is ahead, Vancouver or Tehran?

Vancouver is 10 hours 30 minutes ahead of Tehran. When it is 12:00 PM in Vancouver it is 10:30 PM in Tehran.

Do Vancouver and Tehran use different time zones?

Vancouver (Canada) uses PDT at UTC-07:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are America/Vancouver and Asia/Tehran.

Does daylight saving time affect the Vancouver–Tehran difference?

Yes at the moment: Vancouver 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 Vancouver'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, Vancouver's zone?

PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).

Is there a day difference between Vancouver and Tehran?

Not normally. The +10h 30m gap only pushes the date over for late-evening times.

What is the time difference between Vancouver and Tehran?

Tehran is +10h 30m from Vancouver.

What timezone is Vancouver in?

Vancouver operates on Pacific Time (PST/PDT), same as Los Angeles. As Canada's gateway to Asia, Vancouver bridges North American and Asian markets.

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 Vancouver?

Standard business hours in Vancouver 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 Vancouver and Tehran?

The best overlap for a call is when both cities are in business hours. Vancouver 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 Vancouver and Tehran?

Vancouver uses CAD (C$) while Tehran uses IRR (﷼). Check current exchange rates when planning travel or business between these cities.

How do Vancouver and Tehran compare in size?

Vancouver has a population of approximately 675,000 (metro: 2.6 million), while Tehran has approximately 9.4 million (metro: 16.8 million).

What are the major landmarks in Vancouver and Tehran?

Vancouver is known for Stanley Park, Capilano Suspension Bridge, Gastown. Tehran is famous for Azadi Tower, Golestan Palace, Grand Bazaar.

Do Vancouver and Tehran have stock exchanges?

Yes. Vancouver has the TSX-V (TSX Venture Exchange) and Tehran has the TSE (Tehran Stock Exchange). The +10h 30m time difference affects trading hour overlaps between these exchanges.