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