Offset
The time difference between Hawaii Time and Australian Eastern Time is 20 hours.
Hawaii Time (HST) is behind Australian Eastern Time (AEST).
HST: UTC-10
AEST: UTC+10
Neither Hawaii Time nor Australian Eastern Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 1 PM–5 PM in Hawaii Time (9 AM–1 PM the next day in Australian Eastern Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Hawaii Time (11:00 AM Australian Eastern Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Hawaii Time is also known as HST. To call United States, dial +1.
Australian Eastern Time is also known as AEST, or AEDT. To call Australia, dial +61.
Australian Eastern Time is approximately 5,050 miles southwest of Hawaii Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| HST | AEST | Day |
|---|---|---|
| 12:00 am | 8:00 pm | Same day |
| 1:00 am | 9:00 pm | Same day |
| 2:00 am | 10:00 pm | Same day |
| 3:00 am | 11:00 pm | Same day |
| 4:00 am | 12:00 am | +1 day |
| 5:00 am | 1:00 am | +1 day |
| 6:00 am | 2:00 am | +1 day |
| 7:00 am | 3:00 am | +1 day |
| 8:00 am | 4:00 am | +1 day |
| 9:00 am | 5:00 am | +1 day |
| 10:00 am | 6:00 am | +1 day |
| 11:00 am | 7:00 am | +1 day |
| 12:00 pm | 8:00 am | +1 day |
| 1:00 pm | 9:00 am | +1 day |
| 2:00 pm | 10:00 am | +1 day |
| 3:00 pm | 11:00 am | +1 day |
| 4:00 pm | 12:00 pm | +1 day |
| 5:00 pm | 1:00 pm | +1 day |
| 6:00 pm | 2:00 pm | +1 day |
| 7:00 pm | 3:00 pm | +1 day |
| 8:00 pm | 4:00 pm | +1 day |
| 9:00 pm | 5:00 pm | +1 day |
| 10:00 pm | 6:00 pm | +1 day |
| 11:00 pm | 7:00 pm | +1 day |
Daylight saving time
Australian Eastern Time observes daylight saving time; Hawaii Time does not. The offset between the two zones changes when Australian Eastern Time transitions: on Sunday, October 4, 2026, clocks spring forward from AEST to AEDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:50 AM
- Sunset
- 7:12 PM
- Day length
- 13h 22m
- Sunrise
- 6:54 AM
- Sunset
- 4:54 PM
- Day length
- 10h
Daylight overlap: 8h 17m — 10:54 AM–7:12 PM in Hawaii Time (6:54 AM–3:12 PM in Australian Eastern Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Hawaii Time
Cities in Australian Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Hawaii Time
- HNL
Airports in Australian Eastern Time
- SYD
- CBR
Related conversions
Common conversions
- What is 9:00 am HST in AEST?
- 9:00 am HST is 5:00 am AEST, the next day.
- What is 12:00 pm HST in AEST?
- 12:00 pm HST is 8:00 am AEST, the next day.
- What is 12:30 pm HST in AEST?
- 12:30 pm HST is 8:30 am AEST, the next day.
- What is 2:00 pm HST in AEST?
- 2:00 pm HST is 10:00 am AEST, the next day.
- What is 5:00 pm HST in AEST?
- 5:00 pm HST is 1:00 pm AEST, the next day.
- What is 11:30 pm HST in AEST?
- 11:30 pm HST is 7:30 pm AEST, the next day.