Time Difference: New York and Sydney
Sydney is usually 14 to 16 hours ahead of New York, depending on daylight saving in the US and Australia.
Daylight saving note: Varies between 14 and 16 hours: 16h when New York is on EST and Sydney is on AEDT, 14h when New York is on EDT and Sydney is on AEST, and 15h during short transition periods.
A 15-Hour Gap With Four Different Values
The New York–Sydney time difference is unusual because both cities observe daylight saving — but in opposite hemispheres and on opposite schedules. The US (Eastern Time) shifts clocks in March and November. Australia (AEST/AEDT) shifts in October and April. This makes the exact gap date-dependent.
The common states are: New York EST (UTC-5) to Sydney AEDT (UTC+11) = 16 hours, New York EDT (UTC-4) to Sydney AEST (UTC+10) = 14 hours, and short transition periods where the gap is 15 hours.
For practical scheduling, the easiest rule is: Sydney is far ahead of New York, and the live clock should be checked for the specific date, particularly around October, November, March, and April.
Data point: Australia is the United States' 14th largest goods trading partner, with two-way trade in goods and services exceeding A$110 billion annually. Australian Government DFAT Trade Statistics 2023
New York to Sydney Conversion Table
This reference table uses the baseline offset (+16h). Use the live clocks above for the current offset, especially when daylight saving changes either city.
| 🇺🇸 New York (ET) | 🇦🇺 Sydney (AEST) | Note |
|---|---|---|
| 00:00 | 16:00 | |
| 03:00 | 19:00 | |
| 06:00 | 22:00 | |
| 09:00 | 01:00 | next day |
| 12:00 | 04:00 | next day |
| 15:00 | 07:00 | next day |
| 18:00 | 10:00 | next day |
| 21:00 | 13:00 | next day |
* "next day" / "prev day" = the converted time falls on a different calendar date.
Almost No Synchronous Overlap
With a 14–16-hour gap, synchronous New York–Sydney meetings require extreme compromises. Sydney's 9:00 AM–5:00 PM workday usually maps to New York evening or overnight. Most US-Australia teams default to async communication and hold weekly syncs at either early morning Sydney or late afternoon/evening New York.
Avoiding New York-Sydney Time Mistakes
The safest way to use this page is to treat the live clocks and the conversion table as two different tools. The live clocks show what is true right now. The table gives you a quick reference based on the page's stated offset, which is useful for planning but still needs the daylight saving note when the two places change clocks on different dates.
Always check the calendar date when the converted time lands near midnight. A late evening time in New York can become the next day in Sydney, and an early morning time can still be the previous day on the other side. That date shift is the part people miss most often when they copy only the clock time into an email or spreadsheet.
For recurring meetings, verify the same slot twice: once in January and once in July. If the answer changes, daylight saving time is involved. Put both local times in the calendar invite, include the timezone abbreviation, and update the invite before the next clock-change week. That is much safer than writing "9 AM your time" and assuming everyone's calendar will interpret it the same way.
If this is a one-off event, use the live clocks above before sending the final time. If you need a custom hour that is not shown in the table, open the related converter or meeting scheduler and enter the exact date and time. That keeps the result tied to the correct timezone rules instead of a memorized offset.
Abbreviations can be slippery, too. ET can mean EST or EDT depending on the season; London can mean GMT or BST; Sydney can mean AEST or AEDT. When accuracy matters, the city name and IANA timezone are safer than the abbreviation alone. This page uses the city timezone for the live clocks, then explains the seasonal abbreviation changes in the note so you can see why the displayed offset may differ from a simple winter table.
Frequently Asked Questions
How many hours ahead is Sydney from New York?
Sydney is usually 14 to 16 hours ahead of New York. It is 16 hours ahead when New York is on EST and Sydney is on AEDT, 14 hours ahead when New York is on EDT and Sydney is on AEST, and 15 hours ahead during short transition periods.
What time is 9 AM New York in Sydney?
9:00 AM New York is usually 1:00 AM next day in Sydney during EST/AEDT, or 11:00 PM same day during EDT/AEST. During transition weeks it can be midnight next day.
Is there any working hours overlap between New York and Sydney?
Practically none. Sydney business hours (9:00 AM–5:00 PM AEST) correspond to 6:00 PM–2:00 AM EST in New York — well outside normal US hours. The only overlap requires one city to join at an unusual time: 7:00–8:00 AM Sydney = 4:00–5:00 PM prior day New York.
Does Australia observe daylight saving like the US?
Yes, but in opposite seasons. New South Wales (Sydney) observes AEDT (UTC+11) from October to April — the Southern Hemisphere summer. The smallest common New York–Sydney gap is 14 hours when New York is on EDT and Sydney is on AEST.