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).

PDT to CDT

+2h

PDT

PDTSOURCE

UTC-07:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CDT

UTC-05:00☀ DST active

HH02

MM00

14:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

PDT

CDT

12:00 AM

2:00 AM

4:00 AM

6:00 AM

8:00 AM

10:00 AM

12:00 PM

2:00 PM

4:00 PM

6:00 PM

8:00 PM

10:00 PM

12:00 AM+1

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

PDT and CDT on the World Map

The map below highlights the PDT (Pacific Daylight Time) and CDT (Central Daylight Time) timezone regions across the globe.

PDT Zone

→

CDT 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

CDT – Central Daylight Time

UTC-05:00

Central Daylight Time (CDT) is the daylight saving offset in the Central Time Zone, 5 hours behind UTC.

Countries in CDT

United States (Central)Canada (Manitoba)

Major Cities in CDT

ChicagoHoustonDallasAustinWinnipegNashville

Key Facts about CDT

•CDT is the same offset as EST (UTC-05:00), which can cause confusion.
•CDT runs from the second Sunday in March to the first Sunday in November.

Daylight Saving:Yes – switches to CST

Learn more about CDT on Wikipedia

Comparing Time Zones: PDT and CDT

PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. CDT runs on Central Daylight Time (CDT) at UTC-05:00. That puts PDT 2 hours ahead of CDT — a difference of +2h at the current offsets.

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

PDT to CDT time conversion table

PDT (PDT)	CDT (CDT)	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 PDT to CDT time

Scheduling a call from PDT to CDT: a 10:00 AM start in PDT lands at 12:00 PM in CDT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both PDT and CDT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM PDT time (11:00 AM–5:00 PM CDT). That is roughly 6 hours of usable overlap.
Booking travel or deliveries: tracking CDT local time against PDT keeps pickup windows and arrival estimates honest across the +2h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +2h gap is not.
Block 9:00 AM–3:00 PM PDT as the recurring meeting window if you work primarily from PDT and need CDT 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 CDT (Central Daylight Time)

Central Daylight Time (CDT) is observed during summer months in the US and Canadian portions of the Central Time Zone. Clocks are moved forward by one hour, aligning with Eastern Standard Time (EST). Most of Mexico and Central America do not observe CDT, staying on CST year-round.

Best time to call between PDT and CDT

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

Business hours overlap

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

PDT is 2 hours ahead of CDT (PDT UTC-07:00 → CDT UTC-05:00). The shared working window is 9:00 AM–3:00 PM PDT. Remember to re-check around daylight-saving transitions.