SST to AEDT Converter
Convert time between Samoa Standard Time (SST) and Australian Eastern Daylight Time (AEDT)
Samoa Standard Time (SST)
Australian Eastern Daylight Time (AEDT)
Time Difference
Australian Eastern Daylight Time (AEDT) is 0 hours ahead of Samoa Standard Time (SST)
Select Date
Select Time
Quick Reference
| SST | AEDT |
|---|---|
| 15:00 | 12:00 |
| 17:00 | 14:00 |
| 19:00 | 16:00 |
| 21:00 | 18:00 |
| 23:00 | 20:00 |
| 01:00 | 22:00 |
| 03:00 | 00:00 |
| 05:00 | 02:00 |
| 07:00 | 04:00 |
| 09:00 | 06:00 |
| 11:00 | 08:00 |
| 13:00 | 10:00 |
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 SST to AEDT Time Conversion
Converting time between Samoa Standard Time (SST) and Australian Eastern Daylight Time (AEDT) is essential when coordinating during Australia's summer months. SST is UTC-11 and stays constant year-round, while AEDT is UTC+11. That makes AEDT a full 22 hours ahead of SST — effectively a complete day's difference, with the international date line in between. AEDT applies in eastern Australia from the first Sunday in October to the first Sunday in April; outside that window the relevant timezone is AEST (UTC+10) and the gap drops to 21 hours.
This converter uses the IANA timezone database to handle the date-line crossing and AEDT/AEST transitions automatically. Whether you're booking a call between Pago Pago and Sydney during Australian summer, watching live cricket or NRL streams, or planning travel via the East Coast, the tool removes the off-by-one-day confusion that catches people out converting between American Samoa and eastern Australia.
Common Use Cases for SST to AEDT Conversion
Business & Work
- Scheduling video calls between American Samoa and Sydney or Melbourne in Australian summer
- Coordinating Pacific–Australia logistics, fisheries, and tourism operations
- Planning live broadcasts and webinars between Pago Pago and the Australian East Coast
Personal & Travel
- Calling family in NSW, Victoria, or Tasmania from American Samoa
- Planning flight connections via Sydney, Melbourne, or Brisbane
- Watching live AFL, NRL, and cricket streamed from eastern Australia
Time Zone Information
Samoa Standard Time (SST)
- UTC Offset: UTC-11
- IANA Timezone: Pacific/Pago_Pago
- Daylight Saving: None - American Samoa does not observe daylight saving time
- Major Cities: Pago Pago, Tafuna, Nu'uuli, Faleniu, Aua
- Coverage: American Samoa and Midway Atoll
Australian Eastern Daylight Time (AEDT)
- UTC Offset: UTC+11
- IANA Timezone: Australia/Sydney
- Daylight Saving: First Sunday in October to first Sunday in April (AEDT)
- Major Cities: Sydney, Melbourne, Hobart, Canberra, Newcastle
- Coverage: New South Wales, Victoria, Tasmania, ACT (during summer)
Quick Reference: SST to AEDT
Remember: AEDT is 22 hours ahead of SST. Outside Australian daylight saving the timezone is AEST (UTC+10) and the gap is 21 hours.
Frequently Asked Questions
What is the time difference between SST and AEDT?
Samoa Standard Time (SST) is UTC-11, while Australian Eastern Daylight Time (AEDT) is UTC+11. AEDT is 22 hours ahead of SST. When it is 12:00 PM in Pago Pago, it is 10:00 AM the next day in Sydney.
When does this SST to AEDT conversion apply?
It applies during Australian summer, from the first Sunday in October to the first Sunday in April, when New South Wales, Victoria, Tasmania, and the ACT shift to AEDT. Outside that window the eastern states are on AEST (UTC+10) and the gap drops to 21 hours.
How does the time difference change throughout the year?
The gap is 22 hours during AEDT (Oct–Apr) and 21 hours during AEST (Apr–Oct). American Samoa never observes daylight saving, so any seasonal shift comes from the Australian side. Set a calendar reminder for AEDT/AEST transitions to keep recurring meetings accurate.
What are the best times for SST–AEDT business calls?
Late afternoon to early evening SST aligns with mid-afternoon next-day AEDT. For example, 4:00–6:00 PM SST is 2:00–4:00 PM AEDT the next day — comfortable for both Pago Pago end-of-day and Sydney mid-afternoon.
Which countries and regions use AEDT?
AEDT covers New South Wales, Victoria, Tasmania, and the Australian Capital Territory during summer (October–April). Major cities include Sydney, Melbourne, Hobart, Canberra, and Newcastle. Queensland does not observe DST and stays on AEST year-round.
Which countries and regions use SST?
Samoa Standard Time (UTC-11) is used in American Samoa and the uninhabited Midway Atoll. The independent state of Samoa is on UTC+13, on the opposite side of the international date line. Major American Samoa locations include Pago Pago, Tafuna, and Nu’uuli.
Pro Tips
- • AEDT is 22 hours ahead of SST — almost a full day, with the international date line in between.
- • American Samoa never observes daylight saving, so the AEDT vs AEST switch is what changes the offset.
- • Late afternoon in Pago Pago is mid-afternoon next-day in Sydney — the strongest business overlap window.
- • Always include the date when scheduling SST↔AEDT meetings; Monday SST is Tuesday AEDT.
- • Queensland stays on AEST year-round and does not observe AEDT — pick the right page for QLD recipients.
- • For one-off calls, double-check the IANA zones (Pacific/Pago_Pago, Australia/Sydney) in your calendar tool.