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BlogHow it works

EST to AEST Converter

Enter a New York, Boston or Miami time and a date to see the time in Sydney, Melbourne or Canberra. Daylight saving runs in opposite seasons in the two countries, and the converter tracks both.

Eastern Time

ESTEastern Time

AESTAustralian Eastern Time

––:––

+14 to +16 h

From New York to Sydney

Add the hours, then check the date: Sydney is usually already on the next day.

New York hours in Sydney time

EST timeEST · AEDTEDT · AEDTEDT · AEST
12:00 AM4:00 PM3:00 PM2:00 PM
1:00 AM5:00 PM4:00 PM3:00 PM
2:00 AM6:00 PM5:00 PM4:00 PM
3:00 AM7:00 PM6:00 PM5:00 PM
4:00 AM8:00 PM7:00 PM6:00 PM
5:00 AM9:00 PM8:00 PM7:00 PM
6:00 AM10:00 PM9:00 PM8:00 PM
7:00 AM11:00 PM10:00 PM9:00 PM
8:00 AM12:00 AM+1 next day11:00 PM10:00 PM
9:00 AM1:00 AM+1 next day12:00 AM+1 next day11:00 PM
10:00 AM2:00 AM+1 next day1:00 AM+1 next day12:00 AM+1 next day
11:00 AM3:00 AM+1 next day2:00 AM+1 next day1:00 AM+1 next day
12:00 PM4:00 AM+1 next day3:00 AM+1 next day2:00 AM+1 next day
1:00 PM5:00 AM+1 next day4:00 AM+1 next day3:00 AM+1 next day
2:00 PM6:00 AM+1 next day5:00 AM+1 next day4:00 AM+1 next day
3:00 PM7:00 AM+1 next day6:00 AM+1 next day5:00 AM+1 next day
4:00 PM8:00 AM+1 next day7:00 AM+1 next day6:00 AM+1 next day
5:00 PM9:00 AM+1 next day8:00 AM+1 next day7:00 AM+1 next day
6:00 PM10:00 AM+1 next day9:00 AM+1 next day8:00 AM+1 next day
7:00 PM11:00 AM+1 next day10:00 AM+1 next day9:00 AM+1 next day
8:00 PM12:00 PM+1 next day11:00 AM+1 next day10:00 AM+1 next day
9:00 PM1:00 PM+1 next day12:00 PM+1 next day11:00 AM+1 next day
10:00 PM2:00 PM+1 next day1:00 PM+1 next day12:00 PM+1 next day
11:00 PM3:00 PM+1 next day2:00 PM+1 next day1:00 PM+1 next day
Each Eastern hour with the Sydney time for every combination of clocks this year. +1 marks the next day in Sydney.

Opposite seasons, three gaps

New York has summer in July; Sydney has it in January. Each city moves its clocks forward for its own summer, so for part of the year the two moves pull the clocks apart and for part they push them together.

The US changes on the second Sunday in March and the first Sunday in November (US Department of Transportation). New South Wales, Victoria, the ACT and Tasmania change on the first Sunday in October and the first Sunday in April (NSW Government). Queensland, home to Brisbane, does not change at all. The result for this year and next:

  1. Dec 31, 2025 – Mar 8, 2026EST UTC−5 · AEDT UTC+11Difference: +16 h
  2. Mar 8, 2026 – Apr 4, 2026EDT UTC−4 · AEDT UTC+11Difference: +15 h
  3. Apr 4, 2026 – Oct 3, 2026EDT UTC−4 · AEST UTC+10Difference: +14 h
  4. Oct 3, 2026 – Nov 1, 2026EDT UTC−4 · AEDT UTC+11Difference: +15 h
  5. Nov 1, 2026 – Mar 14, 2027EST UTC−5 · AEDT UTC+11Difference: +16 h
  6. Mar 14, 2027 – Apr 3, 2027EDT UTC−4 · AEDT UTC+11Difference: +15 h
  7. Apr 3, 2027 – Oct 2, 2027EDT UTC−4 · AEST UTC+10Difference: +14 h
  8. Oct 2, 2027 – Nov 7, 2027EDT UTC−4 · AEDT UTC+11Difference: +15 h
  9. Nov 7, 2027 – Dec 31, 2027EST UTC−5 · AEDT UTC+11Difference: +16 h

Offsets in 2026 – 2027, from the IANA time zone data in your browser's engine

The 5:00 PM call and the lost Friday

The classic slot for New York and Sydney is the end of the US day. A call at 5:00 PM Eastern reaches Sydney between 7:00 AM and 9:00 AM the next morning, depending on the season. Push it later and the US side works late; pull it earlier and Sydney is still asleep.

Weekends do not line up either. Friday afternoon in New York is already Saturday morning in Sydney, and Monday morning in Sydney is still Sunday afternoon in New York. A deadline set for Friday in New York gives the Australian team its weekend to reply, not its working day.

EST to AEST questions

How many hours do I add to New York time for Sydney?

14 hours from early April to early October, 16 hours from early November to mid-March, and 15 hours in the weeks between those dates.

If it is 5:00 PM on Monday in New York, what time is it in Sydney?

It is Tuesday morning in Sydney: 7:00 AM at a 14-hour gap, 8:00 AM at 15 hours or 9:00 AM at 16 hours.

Why is Sydney 16 hours ahead in January but 14 in July?

In January Sydney is on summer time (AEDT, UTC+11) and New York on winter time (EST, UTC−5). In July it is the other way round: AEST (UTC+10) against EDT (UTC−4).

Is Perth on the same time as Sydney?

No. Perth uses Australian Western Time, UTC+8, with no daylight saving. It is two or three hours behind Sydney depending on the season.