Honolulu to Melbourne
+20hHonolulu
HSTSOURCEMelbourne
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and AEST on the World Map
The map below highlights the HST (Hawaii Standard Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
HST – Hawaii Standard Time
UTC-10:00Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.
- •Hawaii does not observe daylight saving time.
- •HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
- •Hawaii is one of only two US states that don't observe DST (the other is Arizona).
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
About Honolulu
WikipediaHonolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.
Pearl Harbor memorial receives over 2 million visitors annually.
About Melbourne
WikipediaMelbourne operates on Australian Eastern Time (AEST/AEDT). As Australia's second-largest city, Melbourne shares business hours with Sydney and the ASX.
Melbourne was the capital of Australia from 1901 to 1927.
Honolulu to Melbourne Time Difference – Complete Guide
Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. Melbourne runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Honolulu 20 hours ahead of Melbourne — a difference of +20h at the current offsets.
In practice, when it is 9:00 AM in Honolulu it is 5:00 AM in Melbourne on the next day. Midnight in Honolulu is 8:00 PM in Melbourne. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Honolulu to Melbourne time conversion table
| Honolulu (HST) | Melbourne (AEST) | Day |
|---|---|---|
| 12:00 AM | 8:00 PM | same day |
| 6:00 AM | 2:00 AM | next day |
| 7:00 AM | 3:00 AM | next day |
| 8:00 AM | 4:00 AM | next day |
| 9:00 AM | 5:00 AM | next day |
| 12:00 PM | 8:00 AM | next day |
| 3:00 PM | 11:00 AM | next day |
| 5:00 PM | 1:00 PM | next day |
| 6:00 PM | 2:00 PM | next day |
| 9:00 PM | 5:00 PM | next day |
Why people convert Honolulu to Melbourne time
- Scheduling a call from Honolulu to Melbourne: a 10:00 AM start in Honolulu lands at 6:00 AM in Melbourne the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +20h gap: Honolulu and Melbourne have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Melbourne is 5:00 AM in Honolulu.
- Booking travel or deliveries: tracking Melbourne local time against Honolulu keeps pickup windows and arrival estimates honest across the +20h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +20h gap is not.
- With a +20h gap there is no shared 9-to-5 window, so alternate the early start: one week Honolulu takes the early slot, the next week Melbourne does.
- Melbourne: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
About HST (Hawaii Standard Time)
Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.
About AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
Best time to call between Honolulu and Melbourne
With a +20h offset there is no overlap inside a normal 9 AM – 5 PM day. Melbourne opens at 9:00 AM AEST, which is 5:00 AM in Honolulu, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Honolulu and Melbourne have no shared working hours because of the +20h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Honolulu is 20 hours ahead of Melbourne (HST UTC-10:00 → AEST UTC+10:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Honolulu
Does not observe DST
Melbourne
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Honolulu and Melbourne?
Honolulu (HST, UTC-10:00) is 20 hours ahead of Melbourne (AEST, UTC+10:00). The gap is currently +20h.
How do I convert Honolulu time to Melbourne time?
Add +20h to Honolulu local time. For example, 9:00 AM in Honolulu is 5:00 AM in Melbourne (next day).
What time is it in Melbourne right now?
Melbourne uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +20h offset from Honolulu.
What is the best time to call Melbourne from Honolulu?
There is no shared working-hours window because of the +20h gap. The closest option is 1:00 PM in Honolulu, which is 9:00 AM in Melbourne.
Which is ahead, Honolulu or Melbourne?
Honolulu is 20 hours ahead of Melbourne. When it is 12:00 PM in Honolulu it is 8:00 AM in Melbourne.
Do Honolulu and Melbourne use different time zones?
Honolulu (USA) uses HST at UTC-10:00, while Melbourne (Australia) uses AEST at UTC+10:00. The IANA identifiers are Pacific/Honolulu and Australia/Melbourne.
Does daylight saving time affect the Honolulu–Melbourne difference?
Neither zone observes daylight saving time, so the +20h offset between Honolulu and Melbourne is fixed all year.
Which other cities share Honolulu's time zone?
HST also covers Honolulu, Hilo, Kailua, Pearl City, Kapolei.
Which countries use HST, Honolulu's zone?
HST is used in United States (Hawaii).
Is there a day difference between Honolulu and Melbourne?
Sometimes. The +20h gap is large enough that 8:00 PM or later in Honolulu already falls on the next day in Melbourne.
What is the time difference between Honolulu and Melbourne?
Melbourne is +20h from Honolulu.
What timezone is Honolulu in?
Honolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.
What timezone is Melbourne in?
Melbourne operates on Australian Eastern Time (AEST/AEDT). As Australia's second-largest city, Melbourne shares business hours with Sydney and the ASX.
What are the business hours in Honolulu?
Standard business hours in Honolulu are 8:00 AM - 5:00 PM HST.
What are the business hours in Melbourne?
Standard business hours in Melbourne are 9:00 AM - 5:00 PM AEST.
What is the best time to schedule a call between Honolulu and Melbourne?
The best overlap for a call is when both cities are in business hours. Honolulu works 8:00 AM - 5:00 PM HST and Melbourne works 9:00 AM - 5:00 PM AEST (+20h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Honolulu and Melbourne?
Honolulu uses USD ($) while Melbourne uses AUD (A$). Check current exchange rates when planning travel or business between these cities.
How do Honolulu and Melbourne compare in size?
Honolulu has a population of approximately 350,000 (metro: 1 million), while Melbourne has approximately 5.1 million (metro: 5.1 million).
What are the major landmarks in Honolulu and Melbourne?
Honolulu is known for Waikiki Beach, Diamond Head, Pearl Harbor. Melbourne is famous for Federation Square, Melbourne Cricket Ground, Royal Botanic Gardens.
Do Honolulu and Melbourne have stock exchanges?
Yes. Honolulu has the N/A (Uses NYSE/NASDAQ) and Melbourne has the ASX (Australian Securities Exchange). The +20h time difference affects trading hour overlaps between these exchanges.
Which countries use HST (Hawaii Standard Time)?
HST is used in United States (Hawaii).
Does HST observe daylight saving time?
No, HST does not observe daylight saving time and remains at UTC-10:00 year-round.
What are some interesting facts about HST?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
Which cities are in the AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in Honolulu, what time is it in Melbourne?
When it is 12:00 AM (midnight) in Honolulu (HST), it is +20h later in Melbourne (AEST).
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