AWST to HST Converter & Meeting Planner
Quick answer: 9:00 AM AWST = 3:00 PM HST (fixed +08:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Australian Western Standard Time (AWST) and Hawaii-Aleutian Standard Time (HST)? You need to account for the standard time difference. Hawaii-Aleutian Standard Time is normally 18 hours behind Australian Western Standard Time. Whether you are coordinating between teams in Perth and Bunbury and Honolulu and Hilo, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM AWST = 6:00 AM HST. The full 24-hour AWST to HST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AWST = 9:00 PM HST (-1 day).
| AWST Time | HST Time |
|---|---|
| 12:00 AM (00:00) | 6:00 AM (06:00)-1 day |
| 1:00 AM (01:00) | 7:00 AM (07:00)-1 day |
| 2:00 AM (02:00) | 8:00 AM (08:00)-1 day |
| 3:00 AM (03:00) | 9:00 AM (09:00)-1 day |
| 4:00 AM (04:00) | 10:00 AM (10:00)-1 day |
| 5:00 AM (05:00) | 11:00 AM (11:00)-1 day |
| 6:00 AM (06:00) | 12:00 PM (12:00)-1 day |
| 7:00 AM (07:00) | 1:00 PM (13:00)-1 day |
| 8:00 AM (08:00) | 2:00 PM (14:00)-1 day |
| 9:00 AM (09:00) | 3:00 PM (15:00)-1 day |
| 10:00 AM (10:00) | 4:00 PM (16:00)-1 day |
| 11:00 AM (11:00) | 5:00 PM (17:00)-1 day |
| 12:00 PM (12:00) | 6:00 PM (18:00)-1 day |
| 1:00 PM (13:00) | 7:00 PM (19:00)-1 day |
| 2:00 PM (14:00) | 8:00 PM (20:00)-1 day |
| 3:00 PM (15:00) | 9:00 PM (21:00)-1 day |
| 4:00 PM (16:00) | 10:00 PM (22:00)-1 day |
| 5:00 PM (17:00) | 11:00 PM (23:00)-1 day |
| 6:00 PM (18:00) | 12:00 AM (00:00) |
| 7:00 PM (19:00) | 1:00 AM (01:00) |
| 8:00 PM (20:00) | 2:00 AM (02:00) |
| 9:00 PM (21:00) | 3:00 AM (03:00) |
| 10:00 PM (22:00) | 4:00 AM (04:00) |
| 11:00 PM (23:00) | 5:00 AM (05:00) |
Best time to call Honolulu from Perth
For most work calls, compare the normal business day in Perth (AWST) with the business day in Honolulu (HST). AWST commonly covers Oceania, Australia, while HST is mainly associated with Pacific Ocean, North America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 8:30 AM - 11:00 AM AWST, which corresponds to 2:30 PM - 5:00 PM HST. This window sits inside the typical AWST workday (8:30 AM - 5:00 PM) and the HST workday (9:00 AM - 5:00 PM).
- DST Safety: AWST or HST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Australian Securities Exchange (ASX) - Local Perth Hours: 08:00-14:00 local time in Perth.
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Frequently Asked Questions
What is the time difference between AWST and HST?
During standard time, Hawaii-Aleutian Standard Time is 18 hours behind Australian Western Standard Time.
Does Perth observe Daylight Saving Time?
Perth and the rest of Western Australia do not observe Daylight Saving Time. Western Australians have voted against DST in multiple state referendums — most recently in 2009 — and AWST remains permanently fixed at UTC+08:00 throughout the year.
Are AWST and China Standard Time the same?
AWST and China Standard Time (CST) share the exact same UTC+08:00 offset, meaning Perth and Beijing operate on an identical clock. The same applies to Singapore Time (SGT) and Malaysia Time (MYT) — all three are perfectly synchronized with AWST, eliminating offset calculations entirely for the resource and commodity trade flows that connect Perth to these major Asian markets.
Does Hawaii observe Daylight Saving Time?
Hawaii does not observe Daylight Saving Time and has not done so since 1947, remaining fixed at UTC-10:00 year-round. At roughly 20° North latitude, Hawaii's daylight hours vary by only about 1.5 hours between the summer and winter solstices — far too little to justify the disruption of a seasonal clock change.
Why is it called Hawaii-Aleutian time?
The name combines two geographically distant US territories that share the same UTC-10:00 standard offset: the Hawaiian Islands in the central Pacific and the westernmost Aleutian Islands of Alaska, which extend past the 180° meridian into the Eastern Hemisphere. Despite sharing a base offset, they behave differently — Hawaii observes no DST, while the Aleutian communities such as Adak do advance to HDT (UTC-9) each summer.