GST to SST Converter
Convert time between Gulf Standard Time (GST) and Samoa Standard Time (SST)
Gulf Standard Time (GST)
Samoa Standard Time (SST)
Time Difference
Samoa Standard Time (SST) is 0 hours ahead of Gulf Standard Time (GST)
Select Date
Select Time
Quick Reference
| GST | SST |
|---|---|
| 06:00 | 15:00 |
| 08:00 | 17:00 |
| 10:00 | 19:00 |
| 12:00 | 21:00 |
| 14:00 | 23:00 |
| 16:00 | 01:00 |
| 18:00 | 03:00 |
| 20:00 | 05:00 |
| 22:00 | 07:00 |
| 00:00 | 09:00 |
| 02:00 | 11:00 |
| 04:00 | 13:00 |
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 GST to SST Time Conversion
Converting time between Gulf Standard Time (GST) and Samoa Standard Time (SST) bridges the Arabian Peninsula and the South Pacific. GST is UTC+4 and SST is UTC-11, making SST 15 hours behind GST. Both timezones are stable year-round — neither the Gulf states (UAE, Oman) nor American Samoa observes daylight saving — so the 15-hour offset is identical every day of the year.
This converter uses the IANA timezone database (Asia/Dubai) to give accurate results. Whether you're booking a call between Dubai or Muscat and Pago Pago, coordinating with Pacific-based teams from Gulf offices, or planning travel via the Middle East, the tool removes the manual offset arithmetic for one of the more dramatic transpacific gaps.
Common Use Cases for GST to SST Conversion
Business & Work
- Scheduling video calls between Dubai, Abu Dhabi, or Muscat and American Samoa
- Coordinating Gulf–Pacific logistics, energy, and shipping operations
- Planning conference calls that bridge Gulf and Samoan working hours
Personal & Travel
- Calling family in American Samoa from the UAE or Oman
- Planning travel itineraries connecting through Dubai to the Pacific
- Coordinating events with audiences across hemispheres
Time Zone Information
Gulf Standard Time (GST)
- UTC Offset: UTC+4
- IANA Timezone: Asia/Dubai
- Daylight Saving: None - the Gulf states do not observe daylight saving time
- Major Cities: Dubai, Abu Dhabi, Sharjah, Muscat, Al Ain
- Coverage: United Arab Emirates and Oman
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
Quick Reference: GST to SST
Remember: SST is always 15 hours behind GST. Neither side observes daylight saving, so the offset is stable year-round.
Frequently Asked Questions
What is the time difference between GST and SST?
Gulf Standard Time (GST) is UTC+4, while Samoa Standard Time (SST) is UTC-11. SST is 15 hours behind GST. When it is 12:00 PM in Dubai, it is 9:00 PM the previous day in Pago Pago.
When does this GST to SST conversion apply?
It applies year-round. Neither the Gulf states (UAE, Oman) nor American Samoa observes daylight saving, so the 15-hour offset is stable in every month of the year.
How does the time difference change throughout the year?
It does not change. GST stays on UTC+4 and SST stays on UTC-11 year-round. That makes this one of the most predictable transpacific conversions — the only complication is the date-line crossing.
What are the best times for GST–SST business calls?
A 15-hour gap with the date line in between leaves only a thin overlap window. Late evening GST (9:00–11:00 PM in Dubai) maps to 6:00–8:00 AM the same day in Pago Pago — late on one side, early on the other.
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.
Which countries and regions use GST?
Gulf Standard Time covers the United Arab Emirates and Oman. Major cities include Dubai, Abu Dhabi, Sharjah, Muscat, and Al Ain. Neighboring Saudi Arabia, Qatar, and Bahrain are on Arabia Standard Time (UTC+3) instead.
Pro Tips
- • SST is always 15 hours behind GST — no DST on either side, so the offset is rock-solid year-round.
- • There is no seasonal shift to worry about, but always confirm the date because of the international date line.
- • Late evening GST and early morning SST is the most workable overlap window for live calls.
- • Asynchronous handoffs work well: end-of-day in Dubai lands at the start of the previous calendar day in Pago Pago.
- • GST refers to Gulf Standard Time (UAE, Oman) — not to be confused with Arabia Standard Time used in Saudi Arabia, Qatar, and Bahrain.
- • For one-off calls, double-check the IANA zones (Asia/Dubai, Pacific/Pago_Pago) in your calendar tool.