HST to AEST: HST is 20 hours behind AEST
Hawaii Standard Time is 20 hours behind Australian Eastern Time right now. It is 2:01 pm HST in Hawaii and 10:01 am AEST in Australian Eastern, which is already the next day there.
Convert a specific time from HST to AEST
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between HST and AEST?
Australian Eastern Time is 20 hours ahead of Hawaii Standard Time. To go from HST to AEST you add 20 hours. That gap is not fixed. Across 2026 the distance between these two zones takes 2 different values, from 20 hours to 21 hours, because Australian Eastern moves its clocks and Hawaii does not. This page recomputes it rather than assuming.
HST to AEST conversion table
Every hour of Thursday, September 24, 2026 in Hawaii, with the matching reading in Australian Eastern. 20 of the 24 hours land on a different calendar date in Australian Eastern, which is the part people get wrong when they schedule across this pair.
| HST | HST 24h | AEST | AEST 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 8:00 pm | 20:00 | same day |
| 1:00 am | 01:00 | 9:00 pm | 21:00 | same day |
| 2:00 am | 02:00 | 10:00 pm | 22:00 | same day |
| 3:00 am | 03:00 | 11:00 pm | 23:00 | same day |
| 4:00 am | 04:00 | 12:00 am | 00:00 | the next day |
| 5:00 am | 05:00 | 1:00 am | 01:00 | the next day |
| 6:00 am | 06:00 | 2:00 am | 02:00 | the next day |
| 7:00 am | 07:00 | 3:00 am | 03:00 | the next day |
| 8:00 am | 08:00 | 4:00 am | 04:00 | the next day |
| 9:00 am | 09:00 | 5:00 am | 05:00 | the next day |
| 10:00 am | 10:00 | 6:00 am | 06:00 | the next day |
| 11:00 am | 11:00 | 7:00 am | 07:00 | the next day |
| 12:00 pm | 12:00 | 8:00 am | 08:00 | the next day |
| 1:00 pm | 13:00 | 9:00 am | 09:00 | the next day |
| 2:00 pm | 14:00 | 10:00 am | 10:00 | the next day |
| 3:00 pm | 15:00 | 11:00 am | 11:00 | the next day |
| 4:00 pm | 16:00 | 12:00 pm | 12:00 | the next day |
| 5:00 pm | 17:00 | 1:00 pm | 13:00 | the next day |
| 6:00 pm | 18:00 | 2:00 pm | 14:00 | the next day |
| 7:00 pm | 19:00 | 3:00 pm | 15:00 | the next day |
| 8:00 pm | 20:00 | 4:00 pm | 16:00 | the next day |
| 9:00 pm | 21:00 | 5:00 pm | 17:00 | the next day |
| 10:00 pm | 22:00 | 6:00 pm | 18:00 | the next day |
| 11:00 pm | 23:00 | 7:00 pm | 19:00 | the next day |
What are the best hours to schedule a call between HST and AEST?
No hour of the standard 9:00 am to 5:00 pm working day falls inside working hours on both sides. Hawaii and Australian Eastern are 20 hours apart, which is too far for an overlap, so somebody has to take a call outside their own working day. The least painful options are below, ranked by how close both sides sit to the middle of the afternoon.
| HST | AEST | Working hours | Note |
|---|---|---|---|
| 1:00 pm | 9:00 am the next day | both sides | afternoon in Hawaii, mid morning in Australian Eastern |
| 2:00 pm | 10:00 am the next day | both sides | afternoon in Hawaii, mid morning in Australian Eastern |
| 3:00 pm | 11:00 am the next day | both sides | afternoon in Hawaii, mid morning in Australian Eastern |
Does daylight saving change HST to AEST?
Hawaii Standard Time does not move its clocks at all, so its UTC-10 offset holds every day of the year.
Australian Eastern Time is currently on AEST and changes next on Sunday, October 4, 2026, when the clock jumps forward from 1:59 am to 3:00 am and the offset moves from UTC+10 to UTC+11.
Because the two sides do not move together, the answer to this conversion changes during the year. For part of the year the gap is 20 hours and for the rest it is 21 hours. The table above is built for today, not for an average day.
Is HST ahead of or behind AEST?
HST is behind AEST by 20 hours: when it is 12:00 pm in Hawaii, it is 8:00 am the next day in Australian Eastern. One wrinkle worth knowing: AEST and AEDT are two names for the same zone, not two zones. Australian Eastern Time reads AEST in winter and AEDT in summer. When somebody types "hst to aest" they nearly always mean the zone rather than the literal winter offset, so this page resolves HST to Pacific/Honolulu and AEST to Australia/Sydney and applies whichever offset is genuinely in force on the day.
Hawaii Standard Time covers Hawaii, which has never moved its clocks. Australian Eastern Time covers Sydney, Melbourne and Canberra, where summer falls in December. The identifiers behind them are Pacific/Honolulu and Australia/Sydney, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is HST in AEST?
- HST is 20 hours behind AEST. 9:00 am HST is 5:00 am the next day AEST.
- How many hours ahead is AEST of HST?
- AEST is 20 hours ahead of HST. That varies across the year, between 20 hours and 21 hours.
- What time is it in Australian Eastern right now?
- 10:01 am AEST on Friday, September 25, 2026.
- When can Hawaii and Australian Eastern meet during working hours?
- There is no shared working hour. The closest fit is 1:00 pm HST, which is 9:00 am AEST.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so HST and AEST are the abbreviations genuinely in force today rather than a fixed assumption.
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