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).

AWST to CLT

-12h

AWST

AWSTSOURCE

UTC+08:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CLT

UTC-03:00☀ DST active

HH12

MM00

00:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

AWST

CLT

12:00 AM

1:00 PM-1

2:00 AM

3:00 PM-1

4:00 AM

5:00 PM-1

6:00 AM

7:00 PM-1

8:00 AM

9:00 PM-1

10:00 AM

11:00 PM-1

12:00 PM

1:00 AM

2:00 PM

3:00 AM

4:00 PM

5:00 AM

6:00 PM

7:00 AM

8:00 PM

9:00 AM

10:00 PM

11:00 AM

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

AWST and CLT on the World Map

The map below highlights the AWST (Australian Western Standard Time) and CLT (Chile Standard Time) timezone regions across the globe.

AWST Zone

→

CLT Zone

Explore all world timezones interactively →

AWST – Australian Western Standard Time

UTC+08:00

Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.

Countries in AWST

Australia (Western Australia)

Major Cities in AWST

PerthMandurahBunburyGeraldton

Key Facts about AWST

•Western Australia does not observe daylight saving time.
•Perth is the most isolated major city in the world.
•AWST is the same offset as China Standard Time and Singapore Time.

Daylight Saving:No – UTC+08:00 year-round

Learn more about AWST on Wikipedia

CLT – Chile Standard Time

UTC-04:00

Chile Standard Time (CLT) is the time zone for continental Chile, 4 hours behind UTC.

Countries in CLT

Chile

Major Cities in CLT

SantiagoValparaísoConcepciónViña del MarAntofagasta

Key Facts about CLT

•Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer.
•Santiago is the largest city in Chile with over 6 million in the metro area.
•Chile spans over 4,300 km from north to south but uses one timezone.

Daylight Saving:Yes – switches to CLST

Learn more about CLT on Wikipedia

Understanding the -12h Gap: AWST vs CLT

AWST runs on Australian Western Standard Time (AWST) at UTC+08:00. CLT runs on Chile Standard Time (CLT) at UTC-04:00. That puts AWST 12 hours behind CLT — a difference of -12h at the current offsets.

In practice, when it is 9:00 AM in AWST it is 9:00 PM in CLT on the previous day. Midnight in AWST is 12:00 PM in CLT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

AWST to CLT time conversion table

AWST (AWST)	CLT (CLT)	Day
12:00 AM	12:00 PM	previous day
6:00 AM	6:00 PM	previous day
7:00 AM	7:00 PM	previous day
8:00 AM	8:00 PM	previous day
9:00 AM	9:00 PM	previous day
12:00 PM	12:00 AM	same day
3:00 PM	3:00 AM	same day
5:00 PM	5:00 AM	same day
6:00 PM	6:00 AM	same day
9:00 PM	9:00 AM	same day

Why people convert AWST to CLT time

Scheduling a call from AWST to CLT: a 10:00 AM start in AWST lands at 10:00 PM in CLT the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -12h gap: AWST and CLT 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 CLT is 9:00 PM in AWST.
Booking travel or deliveries: tracking CLT local time against AWST keeps pickup windows and arrival estimates honest across the -12h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -12h gap is not.
With a -12h gap there is no shared 9-to-5 window, so alternate the early start: one week AWST takes the early slot, the next week CLT does.

About AWST (Australian Western Standard Time)

Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city in the world.

About CLT (Chile Standard Time)

Chile Standard Time (CLT) is the standard time in Chile. During summer months (October to March), Chile switches to Chile Summer Time (CLST, UTC-03:00). Chile is the longest north-south country in the world.

Best time to call between AWST and CLT

With a -12h offset there is no overlap inside a normal 9 AM – 5 PM day. CLT opens at 9:00 AM CLT, which is 9:00 PM in AWST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

AWST and CLT have no shared working hours because of the -12h gap. Teams need to alternate early starts or rely on asynchronous handovers.

AWST is 12 hours behind CLT (AWST UTC+08:00 → CLT UTC-04:00). 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

AWST

Does not observe DST

CLT

☀ Currently in DST

Standard: UTC-04:00 · DST: UTC-03:00

Clocks fall back on Sun, Apr 4, 2027

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 AWST and CLT?

AWST (AWST, UTC+08:00) is 12 hours behind CLT (CLT, UTC-04:00). The gap is currently -12h.

How do I convert AWST time to CLT time?

Add -12h to AWST local time. For example, 9:00 AM in AWST is 9:00 PM in CLT (previous day).

What time is it in CLT right now?

CLT uses CLT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -12h offset from AWST.

What is the best time to call CLT from AWST?

There is no shared working-hours window because of the -12h gap. The closest option is 1:00 PM in AWST, which is 1:00 AM in CLT.

Which is behind, AWST or CLT?

AWST is 12 hours behind CLT. When it is 12:00 PM in AWST it is 12:00 AM in CLT.

Does daylight saving time affect the AWST–CLT difference?

Neither zone observes daylight saving time, so the -12h offset between AWST and CLT is fixed all year.

Which other cities share AWST's time zone?

AWST also covers Perth, Mandurah, Bunbury, Geraldton.

Which countries use AWST, AWST's zone?

AWST is used in Australia (Western Australia).

Is there a day difference between AWST and CLT?

Sometimes. The -12h gap is large enough that 8:00 PM or later in AWST already falls on the in CLT.

What is the time difference between AWST and CLT?

CLT is -12h from AWST.

What timezone is AWST in?

AWST operates on its local timezone.

What timezone is CLT in?

CLT operates on its local timezone.

Which countries use AWST (Australian Western Standard Time)?

AWST is used in Australia (Western Australia).

Does AWST observe daylight saving time?

No, AWST does not observe daylight saving time and remains at UTC+08:00 year-round.

What are some interesting facts about AWST?

Western Australia does not observe daylight saving time. Perth is the most isolated major city in the world.

Which cities are in the CLT timezone?

Major cities in the CLT timezone include Santiago, Valparaíso, Concepción, Viña del Mar, Antofagasta.

What is the UTC offset for CLT?

Chile Standard Time (CLT) is at UTC-04:00. During daylight saving time, it shifts to CLST.

What should I know about the CLT timezone?

Chile observes daylight saving time, switching to CLST (UTC-03:00) in summer. Santiago is the largest city in Chile with over 6 million in the metro area.