Anchorage to ACST
+17h 30mAnchorage
AKDTSOURCEACST
ACSTGreen rows indicate typical business hours (9 AM - 5 PM)
AKDT and ACST on the World Map
The map below highlights the AKDT (Alaska Standard Time) and ACST (Australian Central Standard Time) timezone regions across the globe.
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
ACST – Australian Central Standard Time
UTC+09:30Australian Central Standard Time (ACST, UTC+09:30) covers South Australia and the Northern Territory, on a half-hour offset.
- •ACST uses a half-hour offset: UTC+09:30.
- •South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
- •Adelaide and Darwin are 30 minutes apart during daylight saving, level in winter.
- •Adelaide is one of the few major cities on a 30-minute offset.
About Anchorage
WikipediaAnchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
Moose occasionally wander through the city streets.
Comparing Time Zones: Anchorage and ACST
Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, currently observing daylight saving time. ACST runs on Australian Central Standard Time (ACST) at UTC+09:30. That puts Anchorage 17 hours 30 minutes ahead of ACST — a difference of +17h 30m at the current offsets.
In practice, when it is 9:00 AM in Anchorage it is 2:30 AM in ACST on the next day. Midnight in Anchorage is 5:30 PM in ACST.Anchorage observes daylight saving time while ACST does not, so the gap narrows or widens by an hour part of the year.
Anchorage to ACST time conversion table
| Anchorage (AKDT) | ACST (ACST) | Day |
|---|---|---|
| 12:00 AM | 5:30 PM | same day |
| 6:00 AM | 11:30 PM | same day |
| 7:00 AM | 12:30 AM | next day |
| 8:00 AM | 1:30 AM | next day |
| 9:00 AM | 2:30 AM | next day |
| 12:00 PM | 5:30 AM | next day |
| 3:00 PM | 8:30 AM | next day |
| 5:00 PM | 10:30 AM | next day |
| 6:00 PM | 11:30 AM | next day |
| 9:00 PM | 2:30 PM | next day |
Why people convert Anchorage to ACST time
- Scheduling a call from Anchorage to ACST: a 10:00 AM start in Anchorage lands at 3:30 AM in ACST the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +17h 30m gap: Anchorage and ACST 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 ACST is 2:30 AM in Anchorage.
- Coordinating a Anchorage-based team with ACST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM AKDT" is unambiguous; "3 PM" across a +17h 30m gap is not.
- With a +17h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Anchorage takes the early slot, the next week ACST does.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +17h 30m gap.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
About ACST (Australian Central Standard Time)
Australian Central Standard Time (ACST) is the half-hour offset of UTC+09:30 used across South Australia and the Northern Territory, taking in Adelaide and Darwin. South Australia moves to Australian Central Daylight Time (ACDT, UTC+10:30) from the first Sunday in October to the first Sunday in April, but the Northern Territory does not observe daylight saving — so Adelaide and Darwin sit 30 minutes apart in summer and level with each other in winter. The half-hour offset means Adelaide is 30 minutes behind Sydney in winter and level with it during daylight saving, which regularly catches out travellers and meeting planners.
Best time to call between Anchorage and ACST
With a +17h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. ACST opens at 9:00 AM ACST, which is 2:30 AM in Anchorage, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Anchorage and ACST have no shared working hours because of the +17h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Anchorage is 17 hours 30 minutes ahead of ACST (AKDT UTC-08:00 → ACST UTC+09:30). 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
Anchorage
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
ACST
❄ Currently in Standard Time
Standard: UTC+09:30 · DST: UTC+10:30
Clocks spring forward on Sat, Oct 3, 2026
⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.
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 Anchorage and ACST?
Anchorage (AKDT, UTC-08:00) is 17 hours 30 minutes ahead of ACST (ACST, UTC+09:30). The gap is currently +17h 30m.
How do I convert Anchorage time to ACST time?
Add +17h 30m to Anchorage local time. For example, 9:00 AM in Anchorage is 2:30 AM in ACST (next day).
What time is it in ACST right now?
ACST uses ACST at UTC+09:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +17h 30m offset from Anchorage.
What is the best time to call ACST from Anchorage?
There is no shared working-hours window because of the +17h 30m gap. The closest option is 1:00 PM in Anchorage, which is 6:30 AM in ACST.
Which is ahead, Anchorage or ACST?
Anchorage is 17 hours 30 minutes ahead of ACST. When it is 12:00 PM in Anchorage it is 5:30 AM in ACST.
Do Anchorage and ACST use different time zones?
Anchorage (USA) uses AKDT at UTC-08:00, while ACST uses ACST at UTC+09:30. The IANA identifiers are America/Anchorage and Australia/Adelaide.
Does daylight saving time affect the Anchorage–ACST difference?
Yes at the moment: Anchorage is on daylight saving time and ACST is not, so the +17h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Anchorage's time zone?
AKDT also covers Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
Which countries use AKDT, Anchorage's zone?
AKDT is used in United States (Alaska).
Is there a day difference between Anchorage and ACST?
Sometimes. The +17h 30m gap is large enough that 8:00 PM or later in Anchorage already falls on the next day in ACST.
What is the time difference between Anchorage and ACST?
ACST is +17h 30m from Anchorage.
What timezone is Anchorage in?
Anchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
What timezone is ACST in?
ACST operates on its local timezone.
What are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
Which countries use AKST (Alaska Standard Time)?
AKST is used in United States (Alaska).
Does AKST observe daylight saving time?
Yes, AKST switches to AKDT during summer months.
What are some interesting facts about AKST?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
Which cities are in the ACST timezone?
Major cities in the ACST timezone include Adelaide, Darwin, Alice Springs, Mount Gambier.
What is the UTC offset for ACST?
Australian Central Standard Time (ACST) is at UTC+09:30. During daylight saving time, it shifts to ACDT.
What should I know about the ACST timezone?
ACST uses a half-hour offset: UTC+09:30. South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
When is it midnight in Anchorage, what time is it in ACST?
When it is 12:00 AM (midnight) in Anchorage (AKST), it is +17h 30m later in ACST (ACST).
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