PST to Sydney
+18hPST
PSTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
PST and AEST on the World Map
The map below highlights the PST (Pacific Standard Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
PST – Pacific Standard Time
UTC-08:00Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.
- •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.
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •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.
About Sydney
WikipediaSydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
Sydney is one of the first major cities to welcome the New Year.
PST to Sydney Time Difference – Complete Guide
PST runs on Pacific Standard Time (PST) at UTC-08:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts PST 18 hours ahead of Sydney — a difference of +18h at the current offsets.
In practice, when it is 9:00 AM in PST it is 3:00 AM in Sydney on the next day. Midnight in PST is 6:00 PM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PST to Sydney time conversion table
| PST (PST) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | same day |
| 6:00 AM | 12:00 AM | next day |
| 7:00 AM | 1:00 AM | next day |
| 8:00 AM | 2:00 AM | next day |
| 9:00 AM | 3:00 AM | next day |
| 12:00 PM | 6:00 AM | next day |
| 3:00 PM | 9:00 AM | next day |
| 5:00 PM | 11:00 AM | next day |
| 6:00 PM | 12:00 PM | next day |
| 9:00 PM | 3:00 PM | next day |
Why people convert PST to Sydney time
- Scheduling a call from PST to Sydney: a 10:00 AM start in PST lands at 4:00 AM in Sydney the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +18h gap: PST and Sydney 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 Sydney is 3:00 AM in PST.
- Booking travel or deliveries: tracking Sydney local time against PST keeps pickup windows and arrival estimates honest across the +18h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM PST" 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 PST takes the early slot, the next week Sydney does.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 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.
Best time to call between PST and Sydney
With a +18h offset there is no overlap inside a normal 9 AM – 5 PM day. Sydney opens at 9:00 AM AEST, which is 3:00 AM in PST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PST and Sydney have no shared working hours because of the +18h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PST is 18 hours ahead of Sydney (PST UTC-08:00 → AEST UTC+10:00). 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
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 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:
Frequently Asked Questions
What is the time difference between PST and Sydney?
PST (PST, UTC-08:00) is 18 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +18h.
How do I convert PST time to Sydney time?
Add +18h to PST local time. For example, 9:00 AM in PST is 3:00 AM in Sydney (next day).
What time is it in Sydney right now?
Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +18h offset from PST.
What is the best time to call Sydney from PST?
There is no shared working-hours window because of the +18h gap. The closest option is 1:00 PM in PST, which is 7:00 AM in Sydney.
Which is ahead, PST or Sydney?
PST is 18 hours ahead of Sydney. When it is 12:00 PM in PST it is 6:00 AM in Sydney.
Do PST and Sydney use different time zones?
PST uses PST at UTC-08:00, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are America/Los_Angeles and Australia/Sydney.
Does daylight saving time affect the PST–Sydney difference?
Neither zone observes daylight saving time, so the +18h offset between PST and Sydney is fixed all year.
Which other cities share PST's time zone?
PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PST, PST's zone?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PST and Sydney?
Sometimes. The +18h gap is large enough that 8:00 PM or later in PST already falls on the next day in Sydney.
What is the time difference between PST and Sydney?
Sydney is +18h from PST.
What timezone is PST in?
PST operates on its local timezone.
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.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
Which countries use PST (Pacific Standard Time)?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PST observe daylight saving time?
Yes, PST switches to PDT during summer months.
What are some interesting facts about PST?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
Which cities are in the AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in PST, what time is it in Sydney?
When it is 12:00 AM (midnight) in PST (PST), it is +18h later in Sydney (AEST).
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