AKST to AEDT Converter
Convert time between Alaska Standard Time (AKST) and Australian Eastern Daylight Time (AEDT)
Alaska Standard Time (AKST)
Australian Eastern Daylight Time (AEDT)
Time Difference
Australian Eastern Daylight Time (AEDT) is 0 hours ahead of Alaska Standard Time (AKST)
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Quick Reference
| AKST | AEDT |
|---|---|
| 18:00 | 13:00 |
| 20:00 | 15:00 |
| 22:00 | 17:00 |
| 00:00 | 19:00 |
| 02:00 | 21:00 |
| 04:00 | 23:00 |
| 06:00 | 01:00 |
| 08:00 | 03:00 |
| 10:00 | 05:00 |
| 12:00 | 07:00 |
| 14:00 | 09:00 |
| 16:00 | 11:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About AKST to AEDT Time Conversion
Converting time between Alaska Standard Time (AKST, UTC-9) and Australian Eastern Daylight Time (AEDT, UTC+11) involves a 20-hour difference, with AEDT well ahead. AKST is observed in Alaska during winter months — from early November to mid-March — covering Anchorage, Fairbanks, and Juneau, while AEDT is active in Sydney, Melbourne, and Canberra during Australian summer (October to April).
This converter uses the IANA timezone database for accurate results. AEDT is itself a daylight saving time timezone — it applies only when eastern Australia advances its clocks in October, reverting to AEST (UTC+10) in April. Similarly, AKST applies only during Alaska's winter; Alaska uses AKDT (UTC-8) in summer. The combination of both regions' DST schedules means this pairing is only simultaneously active during the overlap of Alaska winter and Australian summer.
Common Use Cases for AKST to AEDT Conversion
Business & Work
- Scheduling calls between Anchorage or Fairbanks offices and Sydney or Melbourne teams during overlap periods
- Coordinating Alaska-based resource and energy industry contacts with Australian eastern partners
- Planning cross-Pacific project milestones during Alaska winter and Australian summer
Personal & Travel
- Calling family and friends between Alaska and eastern Australia
- Planning travel from Anchorage to Sydney or Melbourne
- Joining Australian-hosted online events from Alaska during winter
Time Zone Information
Alaska Standard Time (AKST)
- UTC Offset: UTC-9 (UTC-8 AKDT during summer)
- IANA Timezone: America/Anchorage
- Daylight Saving: Second Sunday in March to First Sunday in November (switches to AKDT, UTC-8)
- Major Cities: Anchorage, Fairbanks, Juneau, Sitka, Ketchikan
- Coverage: Alaska, United States
Australian Eastern Daylight Time (AEDT)
- UTC Offset: UTC+11 (UTC+10 AEST during winter)
- IANA Timezone: Australia/Sydney
- Daylight Saving: First Sunday in October to First Sunday in April (AEDT, UTC+11)
- Major Cities: Sydney, Melbourne, Canberra, Hobart, Wollongong
- Coverage: New South Wales, Victoria, Tasmania, ACT during summer
Quick Reference: AKST to AEDT
AEDT is 20 hours ahead of AKST. AEDT is only active during Australian summer (Oct–Apr). Outside this window, eastern Australia uses AEST (UTC+10), reducing the gap to 19 hours. When Alaska switches to AKDT (UTC-8) in March, the gap with AEDT drops to 19 hours.
Frequently Asked Questions
What is the time difference between AKST and AEDT?
Alaska Standard Time (AKST) is UTC-9, while Australian Eastern Daylight Time (AEDT) is UTC+11. AEDT is 20 hours ahead of AKST. For example, when it's 12:00 PM in Anchorage (AKST), it's 8:00 AM the next day in Sydney (AEDT).
When is AKST observed?
Alaska Standard Time (AKST, UTC-9) is observed in Alaska from the first Sunday in November to the second Sunday in March. During the rest of the year, Alaska uses Alaska Daylight Time (AKDT, UTC-8), which reduces the gap with AEDT to 19 hours.
When is AEDT observed?
Australian Eastern Daylight Time (AEDT, UTC+11) is observed in New South Wales, Victoria, Tasmania, and the ACT from the first Sunday in October to the first Sunday in April. Outside this period, these states use AEST (UTC+10), reducing the gap with AKST to 19 hours. Queensland observes AEST year-round with no DST.
What are the best times for AKST to AEDT business calls?
With a 20-hour gap, finding overlap is challenging. Early afternoon in Anchorage offers the most practical window: 1:00–3:00 PM AKST corresponds to 9:00–11:00 AM AEDT the next day in Sydney — squarely within business hours for both cities. Alternatively, start-of-day Sydney (8–9 AM AEDT) aligns with noon–1 PM AKST the previous day.
Which Australian states use AEDT?
AEDT is observed during summer (October–April) in New South Wales (Sydney), Victoria (Melbourne), Tasmania (Hobart), and the Australian Capital Territory (Canberra). Queensland (Brisbane) does not observe daylight saving and remains on AEST (UTC+10) year-round. South Australia uses ACDT (UTC+10:30) during the same period.
When are AKST and AEDT active simultaneously?
AKST (UTC-9) applies November–March and AEDT (UTC+11) applies October–April. The overlap when both are simultaneously active is November through late March — roughly Alaska winter coinciding with Australian summer. Outside this window, one or both regions have switched timezone, changing the offset to 19 hours.
Pro Tips
- • AEDT is 20 hours ahead of AKST — Sydney is nearly a full day ahead of Anchorage during Alaska winter and Australian summer.
- • Both AKST and AEDT are DST-dependent — this 20-hour gap only applies November through late March when both are active.
- • 1–3 PM AKST maps to 9–11 AM AEDT (next day) — the best business hours overlap for Anchorage–Sydney calls.
- • Queensland (Brisbane) uses AEST year-round with no DST — if your contact is in Brisbane, the gap from AKST is always 19 hours.
- • When Alaska moves to AKDT in March, the gap drops to 19 hours — update recurring meeting invites at that transition.
- • Because the gap is nearly 24 hours, a 20-hour difference means "same time, next day" is a useful mental shortcut.
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