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.

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).

PDT to UTC

Q: What is UTC?

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

+7h

PDT

PDTSOURCE

UTC-07:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

UTC

UTC+00:00

HH07

MM00

19:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

PDT

UTC

12:00 AM

7:00 AM

2:00 AM

9:00 AM

4:00 AM

11:00 AM

6:00 AM

1:00 PM

8:00 AM

3:00 PM

10:00 AM

5:00 PM

12:00 PM

7:00 PM

2:00 PM

9:00 PM

4:00 PM

11:00 PM

6:00 PM

1:00 AM+1

8:00 PM

3:00 AM+1

10:00 PM

5:00 AM+1

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

PDT and UTC on the World Map

The map below highlights the PDT (Pacific Daylight Time) and UTC (Coordinated Universal Time) timezone regions across the globe.

PDT Zone

→

UTC Zone

Explore all world timezones interactively →

PDT – Pacific Daylight Time

UTC-07:00

Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.

Countries in PDT

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

Major Cities in PDT

Los AngelesSan FranciscoSeattleVancouverPortland

Key Facts about PDT

•PDT aligns with MST at UTC-07:00.
•Tech company earnings calls often reference PDT/PST times.

Daylight Saving:Yes – switches to PST

Learn more about PDT on Wikipedia

UTC – Coordinated Universal Time

UTC+00:00

Coordinated Universal Time (UTC) is the world's primary time standard, used as the basis for civil time worldwide.

Countries in UTC

Used worldwide as referenceSame zone as: UK, Ireland, Iceland, Portugal, Ghana

Major Cities in UTC

LondonDublinReykjavikAccraLisbonDakar

Key Facts about UTC

•UTC is the basis for all civil time zones worldwide.
•The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
•UTC is based on atomic clocks and is accurate to within a nanosecond per day.
•Servers and databases worldwide store timestamps in UTC to avoid timezone confusion.
•Leap seconds are occasionally added to UTC to keep it aligned with Earth's rotation.

Daylight Saving:No – UTC+00:00 year-round

Learn more about UTC on Wikipedia

PDT vs UTC: Offsets, DST and Best Call Times

PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. UTC runs on Coordinated Universal Time (UTC) at UTC+00:00. That puts PDT 7 hours ahead of UTC — a difference of +7h at the current offsets.

In practice, when it is 9:00 AM in PDT it is 4:00 PM in UTC. Midnight in PDT is 7:00 AM in UTC. Neither zone observes daylight saving time, so the offset between them stays constant all year.

PDT to UTC time conversion table

PDT (PDT)	UTC (UTC)	Day
12:00 AM	7:00 AM	same day
6:00 AM	1:00 PM	same day
7:00 AM	2:00 PM	same day
8:00 AM	3:00 PM	same day
9:00 AM	4:00 PM	same day
12:00 PM	7:00 PM	same day
3:00 PM	10:00 PM	same day
5:00 PM	12:00 AM	next day
6:00 PM	1:00 AM	next day
9:00 PM	4:00 AM	next day

Why people convert PDT to UTC time

Scheduling a call from PDT to UTC: a 10:00 AM start in PDT lands at 5:00 PM in UTC, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both PDT and UTC are inside the 9-to-5 working day between 9:00 AM and 10:00 AM PDT time (4:00 PM–5:00 PM UTC). That is roughly 1 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in PDT is 3:00 AM in UTC 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 +7h gap is not.
Block 9:00 AM–10:00 AM PDT as the recurring meeting window if you work primarily from PDT and need UTC colleagues present.

About PDT (Pacific Daylight Time)

Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.

About UTC (Coordinated Universal Time)

Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is effectively the successor to GMT and is based on International Atomic Time with leap seconds added to keep it synchronized with Earth's rotation. UTC is used in aviation, computing, navigation, weather forecasting, and the International Space Station. Most programming languages and databases store timestamps in UTC.

Best time to call between PDT and UTC

Both PDT and UTC sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM PDT, which is 4:00 PM–5:00 PM UTC. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

PDT and UTC overlap for only 60 minutes (9:00 AM–10:00 AM PDT), so meetings have to be booked precisely.

PDT is 7 hours ahead of UTC (PDT UTC-07:00 → UTC UTC+00:00). The shared working window is 9:00 AM–10:00 AM PDT. Remember to re-check around daylight-saving transitions.