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HST to AEST converter
Hawaii Time
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Australian Eastern Time
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Australian Eastern Time is 20 hours ahead of Hawaii Time for most of the year, and 21 hours ahead of for part of it, because the two change their clocks on different dates (or only one of them changes at all).
When does the difference change?
In 2026:
- January 1 to April 4: Australian Eastern Time is 21 hours ahead of Hawaii Time
- April 5 to October 3: Australian Eastern Time is 20 hours ahead of Hawaii Time
- October 4 to December 31: Australian Eastern Time is 21 hours ahead of Hawaii Time
Questions
What time is 9 AM HST in AEST?
For most of the year, 9 AM Hawaii Time is 5 AM the next day Australian Eastern Time. For part of the year it is 6 AM the next day, because of daylight saving time.
How many hours ahead or behind is AEST from HST?
Australian Eastern Time is 20 hours ahead of Hawaii Time for most of the year, and 21 hours ahead of for part of it, because the two change their clocks on different dates (or only one of them changes at all).
Does the HST to AEST difference change?
Yes. It changes 2 times in 2026 because of daylight saving time.
About these time zones
HST to AEST, hour by hour
| Hawaii Time | Australian Eastern Time |
|---|---|
| 12 AM | 9 PM |
| 1 AM | 10 PM |
| 2 AM | 11 PM |
| 3 AM | 12 AM (next day) |
| 4 AM | 1 AM (next day) |
| 5 AM | 2 AM (next day) |
| 6 AM | 3 AM (next day) |
| 7 AM | 4 AM (next day) |
| 8 AM | 5 AM (next day) |
| 9 AM | 6 AM (next day) |
| 10 AM | 7 AM (next day) |
| 11 AM | 8 AM (next day) |
| 12 PM | 9 AM (next day) |
| 1 PM | 10 AM (next day) |
| 2 PM | 11 AM (next day) |
| 3 PM | 12 PM (next day) |
| 4 PM | 1 PM (next day) |
| 5 PM | 2 PM (next day) |
| 6 PM | 3 PM (next day) |
| 7 PM | 4 PM (next day) |
| 8 PM | 5 PM (next day) |
| 9 PM | 6 PM (next day) |
| 10 PM | 7 PM (next day) |
| 11 PM | 8 PM (next day) |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.