AEST to EST Time Converter
EST is 15 hours behind AEST. Eastern Australia is currently on AEDT (UTC+11:00), and The US East Coast is currently on EDT (UTC-4:00).
Best Time to Call Between AEST and EST
Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 1:00 PM AEST, which is 4:00 PM to 10:00 PM EST.
both at work AEST only EST only neither — hours along the strip are AEST.
Common Times Converted
AEST on the left, EST on the right.
AEST to EST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| AEST | EST | Working hours |
|---|---|---|
| 12:00 AM | 9:00 AM prev day | EST only |
| 1:00 AM | 10:00 AM prev day | EST only |
| 2:00 AM | 11:00 AM prev day | EST only |
| 3:00 AM | 12:00 PM prev day | EST only |
| 4:00 AM | 1:00 PM prev day | EST only |
| 5:00 AM | 2:00 PM prev day | EST only |
| 6:00 AM | 3:00 PM prev day | EST only |
| 7:00 AM | 4:00 PM prev day | EST only |
| 8:00 AM | 5:00 PM prev day | — |
| 9:00 AM | 6:00 PM prev day | AEST only |
| 10:00 AM | 7:00 PM prev day | AEST only |
| 11:00 AM | 8:00 PM prev day | AEST only |
| 12:00 PM | 9:00 PM prev day | AEST only |
| 1:00 PM | 10:00 PM prev day | AEST only |
| 2:00 PM | 11:00 PM prev day | AEST only |
| 3:00 PM | 12:00 AM | AEST only |
| 4:00 PM | 1:00 AM | AEST only |
| 5:00 PM | 2:00 AM | — |
| 6:00 PM | 3:00 AM | — |
| 7:00 PM | 4:00 AM | — |
| 8:00 PM | 5:00 AM | — |
| 9:00 PM | 6:00 AM | — |
| 10:00 PM | 7:00 AM | — |
| 11:00 PM | 8:00 AM | — |
What AEST and EST Actually Are
AEST — Australian Eastern Standard Time
Sydney, Melbourne, Brisbane, Canberra, Hobart. Standing at UTC+10:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, April 4, 2027, to AEST. Sydney and Melbourne move to AEDT (UTC+11) for the southern summer; Brisbane does not change at all.
Queensland abandoned daylight saving after a 1992 referendum, so for five months a year Brisbane and Sydney read different clocks despite sharing a zone.
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
What This Means in Practice
The date changes mid-working-day
For 6 of the eight hours in a normal AEST working day, the equivalent EST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Nearly opposite sides of the clock
At 15 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.
Major Cities in Each Zone
Cities on AEST
Cities on EST
Frequently Asked Questions
What is the time difference between AEST and EST?
EST is 15 hours behind AEST.
What is 9:00 AM AEST in EST?
9:00 AM AEST is 6:00 PM the previous day EST.
What are the best hours to schedule a call between AEST and EST?
Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 7:00 AM to 1:00 PM AEST, which is 4:00 PM to 10:00 PM EST.
Does the difference between AEST and EST change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, April 4, 2027.
Does AEST always mean Australian Eastern Standard Time?
Sydney and Melbourne move to AEDT (UTC+11) for the southern summer; Brisbane does not change at all.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.