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).

Sydney to PST

-18h

Sydney

AESTSOURCE

Australia · UTC+10:00DST observed

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

PST

UTC-07:00☀ DST active

HH06

MM00

(previous day)18:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Sydney

PST

12:00 AM

7:00 AM-1

2:00 AM

9:00 AM-1

4:00 AM

11:00 AM-1

6:00 AM

1:00 PM-1

8:00 AM

3:00 PM-1

10:00 AM

5:00 PM-1

12:00 PM

7:00 PM-1

2:00 PM

9:00 PM-1

4:00 PM

11:00 PM-1

6:00 PM

1:00 AM

8:00 PM

3:00 AM

10:00 PM

5:00 AM

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

AEST and PST on the World Map

The map below highlights the AEST (Australian Eastern Standard Time) and PST (Pacific Standard Time) timezone regions across the globe.

AEST Zone

→

PST Zone

Explore all world timezones interactively →

AEST – Australian Eastern Standard Time

UTC+10:00

Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.

Countries in AEST

Australia (NSW, VIC, QLD, TAS, ACT)Papua New Guinea

Major Cities in AEST

SydneyMelbourneBrisbaneCanberraHobartGold Coast

Key Facts about AEST

•Queensland does not observe daylight saving time, staying on AEST year-round.
•Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
•The Australian Securities Exchange (ASX) operates on AEST/AEDT.
•AEST is 15 hours ahead of EST during winter.

Daylight Saving:Yes – switches to AEDT

Learn more about AEST on Wikipedia

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

About Sydney

Wikipedia

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.

Population:5.4 million

Metro:5.4 million

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

Currency:AUD (A$)

Stock Exchange:ASX (Australian Securities Exchange)

Key Landmarks

Sydney Opera HouseSydney Harbour BridgeBondi BeachDarling HarbourRoyal Botanic Garden

Did You Know?

Sydney is one of the first major cities to welcome the New Year.

Learn more about AEST timezone →

Comparing Time Zones: Sydney and PST

Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. PST runs on Pacific Standard Time (PST) at UTC-08:00. That puts Sydney 18 hours behind PST — a difference of -18h at the current offsets.

In practice, when it is 9:00 AM in Sydney it is 3:00 PM in PST on the previous day. Midnight in Sydney is 6:00 AM in PST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Sydney to PST time conversion table

Sydney (AEST)	PST (PST)	Day
12:00 AM	6:00 AM	previous day
6:00 AM	12:00 PM	previous day
7:00 AM	1:00 PM	previous day
8:00 AM	2:00 PM	previous day
9:00 AM	3:00 PM	previous day
12:00 PM	6:00 PM	previous day
3:00 PM	9:00 PM	previous day
5:00 PM	11:00 PM	previous day
6:00 PM	12:00 AM	same day
9:00 PM	3:00 AM	same day

Why people convert Sydney to PST time

Scheduling a call from Sydney to PST: a 10:00 AM start in Sydney lands at 4:00 PM in PST the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -18h gap: Sydney and PST 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 PST is 3:00 PM in Sydney.
Watching a live event or market open: Sydney viewers need 3:00 PM in PST to catch a 9:00 AM start there, and 6:00 PM if the event is anchored to Sydney.

Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -18h gap is not.
With a -18h gap there is no shared 9-to-5 window, so alternate the early start: one week Sydney takes the early slot, the next week PST does.
Sydney: Clocks spring forward on Sat, Oct 3, 2026. Re-check this page after that date because the offset changes and so does the -18h gap.

About AEST (Australian Eastern Standard Time)

Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.

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.

Best time to call between Sydney and PST

With a -18h offset there is no overlap inside a normal 9 AM – 5 PM day. PST opens at 9:00 AM PST, which is 3:00 PM in Sydney, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Sydney and PST have no shared working hours because of the -18h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Sydney is 18 hours behind PST (AEST UTC+10:00 → PST UTC-08:00). 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

Sydney

❄ Currently in Standard Time

Standard: UTC+10:00 · DST: UTC+11:00

Clocks spring forward on Sat, Oct 3, 2026

PST

☀ Currently in DST

Standard: UTC-08:00 · DST: UTC-07:00

Clocks fall back on Sun, Nov 1, 2026

⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.

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 Sydney and PST?

Sydney (AEST, UTC+10:00) is 18 hours behind PST (PST, UTC-08:00). The gap is currently -18h.

How do I convert Sydney time to PST time?

Add -18h to Sydney local time. For example, 9:00 AM in Sydney is 3:00 PM in PST (previous day).

What time is it in PST right now?

PST uses PST at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -18h offset from Sydney.

What is the best time to call PST from Sydney?

There is no shared working-hours window because of the -18h gap. The closest option is 1:00 PM in Sydney, which is 7:00 PM in PST.

Which is behind, Sydney or PST?

Sydney is 18 hours behind PST. When it is 12:00 PM in Sydney it is 6:00 PM in PST.

Do Sydney and PST use different time zones?

Sydney (Australia) uses AEST at UTC+10:00, while PST uses PST at UTC-08:00. The IANA identifiers are Australia/Sydney and America/Los_Angeles.

Does daylight saving time affect the Sydney–PST difference?

Neither zone observes daylight saving time, so the -18h offset between Sydney and PST is fixed all year.

Which other cities share Sydney's time zone?

AEST also covers Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.

Which countries use AEST, Sydney's zone?

AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.

Is there a day difference between Sydney and PST?

Sometimes. The -18h gap is large enough that 8:00 PM or later in Sydney already falls on the in PST.

What is the time difference between Sydney and PST?

PST is -18h from Sydney.

What timezone is Sydney in?

Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.