ACST to Anchorage
-17h 30mACST
ACSTSOURCEAnchorage
AKDTGreen rows indicate typical business hours (9 AM - 5 PM)
ACST and AKDT on the World Map
The map below highlights the ACST (Australian Central Standard Time) and AKDT (Alaska Standard Time) timezone regions across the globe.
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.
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.
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.
Everything You Need to Know About ACST and Anchorage Time
ACST runs on Australian Central Standard Time (ACST) at UTC+09:30. Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, also currently on daylight saving time. That puts ACST 17 hours 30 minutes behind Anchorage — a difference of -17h 30m at the current offsets.
In practice, when it is 9:00 AM in ACST it is 3:30 PM in Anchorage on the previous day. Midnight in ACST is 6:30 AM in Anchorage.Anchorage observes daylight saving time while ACST does not, so the gap narrows or widens by an hour part of the year.
ACST to Anchorage time conversion table
| ACST (ACST) | Anchorage (AKDT) | Day |
|---|---|---|
| 12:00 AM | 6:30 AM | previous day |
| 6:00 AM | 12:30 PM | previous day |
| 7:00 AM | 1:30 PM | previous day |
| 8:00 AM | 2:30 PM | previous day |
| 9:00 AM | 3:30 PM | previous day |
| 12:00 PM | 6:30 PM | previous day |
| 3:00 PM | 9:30 PM | previous day |
| 5:00 PM | 11:30 PM | previous day |
| 6:00 PM | 12:30 AM | same day |
| 9:00 PM | 3:30 AM | same day |
Why people convert ACST to Anchorage time
- Scheduling a call from ACST to Anchorage: a 10:00 AM start in ACST lands at 4:30 PM in Anchorage the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -17h 30m gap: ACST and Anchorage 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 Anchorage is 3:30 PM in ACST.
- Booking travel or deliveries: tracking Anchorage local time against ACST keeps pickup windows and arrival estimates honest across the -17h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ACST" 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 ACST takes the early slot, the next week Anchorage does.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
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.
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).
Best time to call between ACST and Anchorage
With a -17h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. Anchorage opens at 9:00 AM AKDT, which is 3:30 PM in ACST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
ACST and Anchorage have no shared working hours because of the -17h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
ACST is 17 hours 30 minutes behind Anchorage (ACST UTC+09:30 → AKDT UTC-08:00). 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
ACST
❄ Currently in Standard Time
Standard: UTC+09:30 · DST: UTC+10:30
Clocks spring forward on Sat, Oct 3, 2026
Anchorage
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 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 ACST and Anchorage?
ACST (ACST, UTC+09:30) is 17 hours 30 minutes behind Anchorage (AKDT, UTC-08:00). The gap is currently -17h 30m.
How do I convert ACST time to Anchorage time?
Add -17h 30m to ACST local time. For example, 9:00 AM in ACST is 3:30 PM in Anchorage (previous day).
What time is it in Anchorage right now?
Anchorage uses AKDT at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -17h 30m offset from ACST.
What is the best time to call Anchorage from ACST?
There is no shared working-hours window because of the -17h 30m gap. The closest option is 1:00 PM in ACST, which is 7:30 PM in Anchorage.
Which is behind, ACST or Anchorage?
ACST is 17 hours 30 minutes behind Anchorage. When it is 12:00 PM in ACST it is 6:30 PM in Anchorage.
Do ACST and Anchorage use different time zones?
ACST uses ACST at UTC+09:30, while Anchorage (USA) uses AKDT at UTC-08:00. The IANA identifiers are Australia/Adelaide and America/Anchorage.
Does daylight saving time affect the ACST–Anchorage 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 ACST's time zone?
ACST also covers Adelaide, Darwin, Alice Springs, Mount Gambier.
Which countries use ACST, ACST's zone?
ACST is used in Australia (South Australia, Northern Territory).
Is there a day difference between ACST and Anchorage?
Sometimes. The -17h 30m gap is large enough that 8:00 PM or later in ACST already falls on the in Anchorage.
What is the time difference between ACST and Anchorage?
Anchorage is -17h 30m from ACST.
What timezone is ACST in?
ACST operates on its local timezone.
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 are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
Which countries use ACST (Australian Central Standard Time)?
ACST is used in Australia (South Australia, Northern Territory).
Does ACST observe daylight saving time?
Yes, ACST switches to ACDT during summer months.
What are some interesting facts about ACST?
ACST uses a half-hour offset: UTC+09:30. South Australia moves to ACDT (UTC+10:30) in summer; the Northern Territory does not.
Which cities are in the AKST timezone?
Major cities in the AKST timezone include Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
What is the UTC offset for AKST?
Alaska Standard Time (AKST) is at UTC-09:00. During daylight saving time, it shifts to AKDT.
What should I know about the AKST timezone?
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.
When is it midnight in ACST, what time is it in Anchorage?
When it is 12:00 AM (midnight) in ACST (ACST), it is -17h 30m later in Anchorage (AKST).
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