Sydney to EST
-15hSydney
AESTSOURCEEST
ESTGreen rows indicate typical business hours (9 AM - 5 PM)
AEST and EST on the World Map
The map below highlights the AEST (Australian Eastern Standard Time) and EST (Eastern Standard Time) timezone regions across the globe.
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.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
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.
Time Conversion Guide: Sydney to EST
Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. EST runs on Eastern Standard Time (EST) at UTC-05:00. That puts Sydney 15 hours behind EST — a difference of -15h at the current offsets.
In practice, when it is 9:00 AM in Sydney it is 6:00 PM in EST on the previous day. Midnight in Sydney is 9:00 AM in EST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Sydney to EST time conversion table
| Sydney (AEST) | EST (EST) | Day |
|---|---|---|
| 12:00 AM | 9:00 AM | previous day |
| 6:00 AM | 3:00 PM | previous day |
| 7:00 AM | 4:00 PM | previous day |
| 8:00 AM | 5:00 PM | previous day |
| 9:00 AM | 6:00 PM | previous day |
| 12:00 PM | 9:00 PM | previous day |
| 3:00 PM | 12:00 AM | same day |
| 5:00 PM | 2:00 AM | same day |
| 6:00 PM | 3:00 AM | same day |
| 9:00 PM | 6:00 AM | same day |
Why people convert Sydney to EST time
- Scheduling a call from Sydney to EST: a 10:00 AM start in Sydney lands at 7:00 PM in EST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -15h gap: Sydney and EST 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 EST is 6:00 PM in Sydney.
- Booking travel or deliveries: tracking EST local time against Sydney keeps pickup windows and arrival estimates honest across the -15h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -15h gap is not.
- With a -15h gap there is no shared 9-to-5 window, so alternate the early start: one week Sydney takes the early slot, the next week EST 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 -15h 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 EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
Best time to call between Sydney and EST
With a -15h offset there is no overlap inside a normal 9 AM – 5 PM day. EST opens at 9:00 AM EST, which is 6:00 PM in Sydney, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Sydney and EST have no shared working hours because of the -15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Sydney is 15 hours behind EST (AEST UTC+10:00 → EST UTC-05:00). 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
EST
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
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:
Frequently Asked Questions
What is the time difference between Sydney and EST?
Sydney (AEST, UTC+10:00) is 15 hours behind EST (EST, UTC-05:00). The gap is currently -15h.
How do I convert Sydney time to EST time?
Add -15h to Sydney local time. For example, 9:00 AM in Sydney is 6:00 PM in EST (previous day).
What time is it in EST right now?
EST uses EST at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -15h offset from Sydney.
What is the best time to call EST from Sydney?
There is no shared working-hours window because of the -15h gap. The closest option is 1:00 PM in Sydney, which is 10:00 PM in EST.
Which is behind, Sydney or EST?
Sydney is 15 hours behind EST. When it is 12:00 PM in Sydney it is 9:00 PM in EST.
Do Sydney and EST use different time zones?
Sydney (Australia) uses AEST at UTC+10:00, while EST uses EST at UTC-05:00. The IANA identifiers are Australia/Sydney and America/New_York.
Does daylight saving time affect the Sydney–EST difference?
Neither zone observes daylight saving time, so the -15h offset between Sydney and EST 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 EST?
Sometimes. The -15h gap is large enough that 8:00 PM or later in Sydney already falls on the in EST.
What is the time difference between Sydney and EST?
EST is -15h 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.
What timezone is EST in?
EST operates on its local timezone.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
Which countries use AEST (Australian Eastern Standard Time)?
AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.
Does AEST observe daylight saving time?
Yes, AEST switches to AEDT during summer months.
What are some interesting 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.
Which cities are in the EST timezone?
Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.
What is the UTC offset for EST?
Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.
What should I know about the EST timezone?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
When is it midnight in Sydney, what time is it in EST?
When it is 12:00 AM (midnight) in Sydney (AEST), it is -15h later in EST (EST).
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