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).

PST to MDT

+2h

PST

PSTSOURCE

UTC-07:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

MDT

UTC-06:00☀ DST active

HH02

MM00

14:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

PST

MDT

12:00 AM

1:00 AM

2:00 AM

3:00 AM

4:00 AM

5:00 AM

6:00 AM

7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 PM

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

7:00 PM

8:00 PM

9:00 PM

10:00 PM

11:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

PST and MDT on the World Map

The map below highlights the PST (Pacific Standard Time) and MDT (Mountain Daylight Time) timezone regions across the globe.

PST Zone

→

MDT 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

MDT – Mountain Daylight Time

UTC-06:00

Mountain Daylight Time (MDT) is the daylight saving offset in the Mountain Time Zone, 6 hours behind UTC.

Countries in MDT

United States (Mountain)Canada (Alberta)

Major Cities in MDT

DenverCalgaryEdmontonSalt Lake CityBoise

Key Facts about MDT

•MDT shares the same offset as CST (UTC-06:00).
•Arizona does not switch to MDT, remaining on MST.

Daylight Saving:Yes – switches to MST

Learn more about MDT on Wikipedia

PST vs MDT: Offsets, DST and Best Call Times

PST runs on Pacific Standard Time (PST) at UTC-08:00. MDT runs on Mountain Daylight Time (MDT) at UTC-06:00. That puts PST 2 hours ahead of MDT — a difference of +2h at the current offsets.

In practice, when it is 9:00 AM in PST it is 11:00 AM in MDT. Midnight in PST is 2:00 AM in MDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

PST to MDT time conversion table

PST (PST)	MDT (MDT)	Day
12:00 AM	2:00 AM	same day
6:00 AM	8:00 AM	same day
7:00 AM	9:00 AM	same day
8:00 AM	10:00 AM	same day
9:00 AM	11:00 AM	same day
12:00 PM	2:00 PM	same day
3:00 PM	5:00 PM	same day
5:00 PM	7:00 PM	same day
6:00 PM	8:00 PM	same day
9:00 PM	11:00 PM	same day

Why people convert PST to MDT time

Scheduling a call from PST to MDT: a 10:00 AM start in PST lands at 12:00 PM in MDT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both PST and MDT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM PST time (11:00 AM–5:00 PM MDT). That is roughly 6 hours of usable overlap.
Coordinating a PST-based team with MDT 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 PST" is unambiguous; "3 PM" across a +2h gap is not.
Block 9:00 AM–3:00 PM PST as the recurring meeting window if you work primarily from PST and need MDT colleagues present.

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 MDT (Mountain Daylight Time)

Mountain Daylight Time (MDT) is observed during summer months in the Mountain Time Zone, except in Arizona which stays on MST year-round. MDT aligns with Central Standard Time (CST) at UTC-06:00.

Best time to call between PST and MDT

Both PST and MDT sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM PST, which is 11:00 AM–5:00 PM MDT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

PST and MDT share 6 hours of working-hours overlap (9:00 AM–3:00 PM PST), so scheduling a live meeting is straightforward.

PST is 2 hours ahead of MDT (PST UTC-08:00 → MDT UTC-06:00). The shared working window is 9:00 AM–3:00 PM PST. Remember to re-check around daylight-saving transitions.