SST to SGT Converter
Convert time between Samoa Standard Time (SST) and Singapore Standard Time (SGT)
Samoa Standard Time (SST)
Singapore Standard Time (SGT)
Time Difference
Singapore Standard Time (SGT) is 0 hours ahead of Samoa Standard Time (SST)
Select Date
Select Time
Quick Reference
| SST | SGT |
|---|---|
| 15:00 | 10:00 |
| 17:00 | 12:00 |
| 19:00 | 14:00 |
| 21:00 | 16:00 |
| 23:00 | 18:00 |
| 01:00 | 20:00 |
| 03:00 | 22:00 |
| 05:00 | 00:00 |
| 07:00 | 02:00 |
| 09:00 | 04:00 |
| 11:00 | 06:00 |
| 13:00 | 08:00 |
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 SGT Time Conversion
Converting time between Samoa Standard Time (SST) and Singapore Standard Time (SGT) is needed for coordinating across one of the largest stable time gaps on the planet. SST is UTC-11, while SGT is UTC+8 year-round, placing Singapore 19 hours ahead of American Samoa. Neither side observes daylight saving, so the 19-hour offset is constant 365 days a year.
This time zone converter uses the IANA timezone database to ensure accurate calculations. SST is the timezone of American Samoa (Pacific/Pago_Pago) and the Niue territory. Note: Samoa itself (the independent country) switched to UTC+13 in 2011 to align with Australasia — for that, use other converters. Whether you're scheduling Pago Pago-Singapore meetings, planning Pacific travel, or coordinating with Singapore from American Samoa, our converter provides reliable results.
Be aware: "SST" can ambiguously refer to Singapore Standard Time, Samoa Standard Time, or other zones. On this site `sst` specifically means Samoa Standard Time (UTC-11); Singapore uses the separate `sgt` slug.
Common Use Cases for SST to SGT Conversion
Business & Work
- Scheduling meetings between American Samoa offices or partners and Singapore
- Coordinating Pacific logistics, fisheries and shipping operations
- Planning conference calls across the International Date Line
Personal & Travel
- Planning Pacific travel itineraries between American Samoa and Singapore
- Coordinating with family and friends in Singapore
- Scheduling virtual events bridging the South Pacific and Asia
Time Zone Information
Samoa Standard Time (SST)
- UTC Offset: UTC-11
- IANA Timezone: Pacific/Pago_Pago
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Pago Pago, Tafuna, Nu'uuli, Leone, Faleniu
- Coverage: American Samoa and Niue
Singapore Standard Time (SGT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Singapore
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Singapore
- Coverage: Republic of Singapore
Quick Reference: SST to SGT
Remember: SGT is 19 hours ahead of SST, all year. Neither zone observes daylight saving so the offset never changes. Note that this SST is American Samoa (UTC-11), not the independent state of Samoa (UTC+13 since 2011).
Frequently Asked Questions
What is the time difference between SST and SGT?
Samoa Standard Time (SST) is UTC-11, while Singapore Standard Time (SGT) is UTC+8. SGT is 19 hours ahead of SST. When it is 12:00 PM in Pago Pago, it is 7:00 AM the next day in Singapore.
Does SST mean American Samoa or Singapore time?
On this page SST refers to Samoa Standard Time (UTC-11), used in American Samoa and Niue. Singapore Standard Time has its own slug `sgt` (UTC+8). The independent state of Samoa is on UTC+13 since 2011 — a different timezone with its own page if needed.
How does the time difference change throughout the year?
It does not. Neither American Samoa nor Singapore observes daylight saving, so the 19-hour gap is constant 365 days a year. Scheduling does not change with the seasons.
What are the best times for SST-SGT business calls?
The overlap is narrow because of the 19-hour gap. American Samoa afternoon (2:00 to 4:00 PM SST) maps to Singapore morning (9:00 to 11:00 AM SGT the next day) — workable for both sides. Always confirm dates carefully.
Which countries or regions use SGT?
Singapore Standard Time is used only in the Republic of Singapore. Neighboring Malaysia uses the same UTC+8 offset under the name MYT, and Western Australia uses AWST also at UTC+8.
Which countries or regions use SST?
SST covers American Samoa (an unincorporated US territory) and the Niue territory. Major communities include Pago Pago, Tafuna, Nu’uuli, Leone and Faleniu. The independent state of Samoa is on UTC+13 (different timezone).
Pro Tips
- • SGT is 19 hours ahead of SST — add 19 hours to American Samoa time and roll the date forward to get Singapore time.
- • Neither SST nor SGT observes DST, so the 19-hour gap is permanent year-round.
- • Always include the date in invites — Singapore is typically a full calendar day ahead of American Samoa.
- • SST here is American Samoa (UTC-11) — the independent state of Samoa switched to UTC+13 in 2011 and is a separate timezone.
- • Pago Pago afternoons line up with Singapore mornings the next day — the cleanest overlap window.
- • Use IANA identifiers Pacific/Pago_Pago and Asia/Singapore in calendars to stay aligned with regional rules.