PDT to Sydney
+17hPDT
PDTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and AEST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
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.
Understanding the +17h Gap: PDT vs Sydney
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts PDT 17 hours ahead of Sydney — a difference of +17h at the current offsets.
In practice, when it is 9:00 AM in PDT it is 2:00 AM in Sydney on the next day. Midnight in PDT is 5:00 PM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to Sydney time conversion table
| PDT (PDT) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | same day |
| 6:00 AM | 11:00 PM | same day |
| 7:00 AM | 12:00 AM | next day |
| 8:00 AM | 1:00 AM | next day |
| 9:00 AM | 2:00 AM | next day |
| 12:00 PM | 5:00 AM | next day |
| 3:00 PM | 8:00 AM | next day |
| 5:00 PM | 10:00 AM | next day |
| 6:00 PM | 11:00 AM | next day |
| 9:00 PM | 2:00 PM | next day |
Why people convert PDT to Sydney time
- Scheduling a call from PDT to Sydney: a 10:00 AM start in PDT lands at 3:00 AM in Sydney the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +17h gap: PDT 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 2:00 AM in PDT.
- Coordinating a PDT-based team with Sydney contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +17h gap is not.
- With a +17h gap there is no shared 9-to-5 window, so alternate the early start: one week PDT 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 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 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 PDT and Sydney
With a +17h offset there is no overlap inside a normal 9 AM – 5 PM day. Sydney opens at 9:00 AM AEST, which is 2:00 AM in PDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PDT and Sydney have no shared working hours because of the +17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PDT is 17 hours ahead of Sydney (PDT UTC-07:00 → 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
PDT
☀ 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 PDT and Sydney?
PDT (PDT, UTC-07:00) is 17 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +17h.
How do I convert PDT time to Sydney time?
Add +17h to PDT local time. For example, 9:00 AM in PDT is 2:00 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 +17h offset from PDT.
What is the best time to call Sydney from PDT?
There is no shared working-hours window because of the +17h gap. The closest option is 1:00 PM in PDT, which is 6:00 AM in Sydney.
Which is ahead, PDT or Sydney?
PDT is 17 hours ahead of Sydney. When it is 12:00 PM in PDT it is 5:00 AM in Sydney.
Do PDT and Sydney use different time zones?
PDT uses PDT at UTC-07:00, 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 PDT–Sydney difference?
Neither zone observes daylight saving time, so the +17h offset between PDT and Sydney is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PDT and Sydney?
Sometimes. The +17h gap is large enough that 8:00 PM or later in PDT already falls on the next day in Sydney.
What is the time difference between PDT and Sydney?
Sydney is +17h from PDT.
What timezone is PDT in?
PDT 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 PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
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 PDT, what time is it in Sydney?
When it is 12:00 AM (midnight) in PDT (PDT), it is +17h later in Sydney (AEST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More PDT time conversions
- pdt to los angeles
- pdt to pst
- pdt to new york
- pdt to london
- pdt to dubai
- pdt to tokyo
- pdt to singapore
- pdt to paris
- pdt to delhi
- pdt to mumbai
- pdt to berlin
- pdt to hong kong
- pdt to toronto
- pdt to kathmandu
- new york to pdt
- london to pdt
- dubai to pdt
- tokyo to pdt
- singapore to pdt
- sydney to pdt
- los angeles to pdt
- paris to pdt
- delhi to pdt
- mumbai to pdt
- berlin to pdt
- hong kong to pdt
- toronto to pdt
- kathmandu to pdt
See every conversion from PDT →·See every conversion from Sydney →