ET to AEST Time Converter
AEST is 15 hours ahead of ET. The US East Coast is currently on EDT (UTC-4:00), and Eastern Australia is currently on AEDT (UTC+11:00).
Best Time to Call Between ET and AEST
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 4:00 PM to 10:00 PM ET, which is 7:00 AM to 1:00 PM AEST.
both at work ET only AEST only neither — hours along the strip are ET.
Common Times Converted
ET on the left, AEST on the right.
ET to AEST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| ET | AEST | Working hours |
|---|---|---|
| 12:00 AM | 3:00 PM | AEST only |
| 1:00 AM | 4:00 PM | AEST only |
| 2:00 AM | 5:00 PM | — |
| 3:00 AM | 6:00 PM | — |
| 4:00 AM | 7:00 PM | — |
| 5:00 AM | 8:00 PM | — |
| 6:00 AM | 9:00 PM | — |
| 7:00 AM | 10:00 PM | — |
| 8:00 AM | 11:00 PM | — |
| 9:00 AM | 12:00 AM next day | ET only |
| 10:00 AM | 1:00 AM next day | ET only |
| 11:00 AM | 2:00 AM next day | ET only |
| 12:00 PM | 3:00 AM next day | ET only |
| 1:00 PM | 4:00 AM next day | ET only |
| 2:00 PM | 5:00 AM next day | ET only |
| 3:00 PM | 6:00 AM next day | ET only |
| 4:00 PM | 7:00 AM next day | ET only |
| 5:00 PM | 8:00 AM next day | — |
| 6:00 PM | 9:00 AM next day | AEST only |
| 7:00 PM | 10:00 AM next day | AEST only |
| 8:00 PM | 11:00 AM next day | AEST only |
| 9:00 PM | 12:00 PM next day | AEST only |
| 10:00 PM | 1:00 PM next day | AEST only |
| 11:00 PM | 2:00 PM next day | AEST only |
What ET and AEST Actually Are
ET — Eastern 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.
Eastern Time covers roughly half the US population and, because of that, is the zone most American business defaults to when nobody specifies one.
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.
What This Means in Practice
The date changes mid-working-day
For 8 of the eight hours in a normal ET working day, the equivalent AEST 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 ET
Cities on AEST
Frequently Asked Questions
What is the time difference between ET and AEST?
AEST is 15 hours ahead of ET.
What is 9:00 AM ET in AEST?
9:00 AM ET is 12:00 AM the next day AEST.
What are the best hours to schedule a call between ET and AEST?
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 4:00 PM to 10:00 PM ET, which is 7:00 AM to 1:00 PM AEST.
Does the difference between ET and AEST 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, November 1, 2026.
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.