HST to AEST Time Converter
AEST is 21 hours ahead of HST right now. 9:00 AM in HST is 6:00 AM in AEST (next day).
Time now: HST and AEST
AEST is 21 hours ahead of HST right now. The gap is not fixed: it is 20 hours at some times of the year and 21 hours at others, because at least one of them changes its clocks for daylight saving time.
HST to AEST conversion table
Every hour of the day, using today's time difference.
| HST | AEST |
|---|---|
| 12:00 AM | 9:00 PM |
| 1:00 AM | 10:00 PM |
| 2:00 AM | 11:00 PM |
| 3:00 AM | 12:00 AMnext day |
| 4:00 AM | 1:00 AMnext day |
| 5:00 AM | 2:00 AMnext day |
| 6:00 AM | 3:00 AMnext day |
| 7:00 AM | 4:00 AMnext day |
| 8:00 AM | 5:00 AMnext day |
| 9:00 AM | 6:00 AMnext day |
| 10:00 AM | 7:00 AMnext day |
| 11:00 AM | 8:00 AMnext day |
| 12:00 PM | 9:00 AMnext day |
| 1:00 PM | 10:00 AMnext day |
| 2:00 PM | 11:00 AMnext day |
| 3:00 PM | 12:00 PMnext day |
| 4:00 PM | 1:00 PMnext day |
| 5:00 PM | 2:00 PMnext day |
| 6:00 PM | 3:00 PMnext day |
| 7:00 PM | 4:00 PMnext day |
| 8:00 PM | 5:00 PMnext day |
| 9:00 PM | 6:00 PMnext day |
| 10:00 PM | 7:00 PMnext day |
| 11:00 PM | 8:00 PMnext day |
Best time to meet between HST and AEST
Working hours overlap (9 AM – 6 PM in both places):
- 12:00 PM – 6:00 PM HST = 9:00 AM – 3:00 PM AEST
The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.
Does the time difference between HST and AEST change?
Yes. Right now AEST is 21 hours ahead of HST. These are the dates in the next 12 months when the gap changes:
- Sunday, 4 April 2027: AEST moves its clocks back. AEST is 20 hours ahead of HST from then (it was 21 hours before).
- Sunday, 3 October 2027: AEST moves its clocks forward. AEST is 21 hours ahead of HST from then (it was 20 hours before).
Office hours in each other's time
- 9 AM to 6 PM in HST is 6:00 AM (next day) to 3:00 PM (next day) in AEST.
- 9 AM to 6 PM in AEST is 12:00 PM (previous day) to 9:00 PM (previous day) in HST.
Based on today's clock settings.
Frequently asked questions
What is the time difference between HST and AEST?
AEST is 21 hours ahead of HST right now. The gap is not fixed: it is 20 hours at some times of the year and 21 hours at others, because at least one of them changes its clocks for daylight saving time.
How do I convert HST to AEST?
Add 21 hours to the HST time to get the AEST time (at today's difference). 9:00 AM in HST is 6:00 AM in AEST (next day). Or use the converter above and pick any date and time.
What is the current time in AEST?
It is 11:02 AM in AEST on Tuesday, November 10 (the converter above shows it live). At the same moment it is 2:02 PM in HST.
Does the time difference between HST and AEST change during the year?
Yes. Right now AEST is 21 hours ahead of HST. Over the next 12 months the gap changes 2 times: Sunday, 4 April 2027: AEST moves its clocks back. AEST is 20 hours ahead of HST from then (it was 21 hours before). Sunday, 3 October 2027: AEST moves its clocks forward. AEST is 21 hours ahead of HST from then (it was 20 hours before).
What is the best time for a meeting between HST and AEST?
Between 9 AM and 6 PM in both places you can meet at 12:00 PM – 6:00 PM HST = 9:00 AM – 3:00 PM AEST. Check the overlap section on this page for every option.
What does HST mean?
Hawaii does not use daylight saving time.
What does AEST mean?
Sydney and Melbourne use AEST (UTC+10:00) in winter and AEDT (UTC+11:00) in summer. Brisbane stays on AEST all year.