SST to IST Converter
Convert time between Samoa Standard Time (SST) and India Standard Time (IST)
Samoa Standard Time (SST)
India Standard Time (IST)
Time Difference
India Standard Time (IST) is 0 hours ahead of Samoa Standard Time (SST)
Select Date
Select Time
Quick Reference
| SST | IST |
|---|---|
| 15:00 | 07:30 |
| 17:00 | 09:30 |
| 19:00 | 11:30 |
| 21:00 | 13:30 |
| 23:00 | 15:30 |
| 01:00 | 17:30 |
| 03:00 | 19:30 |
| 05:00 | 21:30 |
| 07:00 | 23:30 |
| 09:00 | 01:30 |
| 11:00 | 03:30 |
| 13:00 | 05:30 |
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 IST Time Conversion
Converting time between Samoa Standard Time (SST) and India Standard Time (IST) bridges the South Pacific and the Indian subcontinent. SST is UTC-11 and IST is UTC+5:30, making IST 16.5 hours ahead of SST. Both timezones are stable year-round — American Samoa never observes daylight saving and India has not used DST since 1945 — so the half-hour offset is identical every day of the year.
IST in this converter refers to India Standard Time (Asia/Kolkata), not Israel Standard Time which uses the same abbreviation but a different offset. Whether you're booking a call between Pago Pago and Mumbai or Bangalore, coordinating with Indian remote teams, or planning travel via the subcontinent, the tool handles the half-hour offset and the date-line crossing without manual arithmetic.
Common Use Cases for SST to IST Conversion
Business & Work
- Scheduling video calls between American Samoa and Mumbai, Bangalore, or Delhi
- Coordinating Pacific–India remote team handoffs and project work
- Planning conference calls that bridge Samoan and Indian working hours
Personal & Travel
- Calling family in India from American Samoa
- Planning travel itineraries connecting through India
- Watching live IPL cricket and other Indian broadcasts
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
India Standard Time (IST)
- UTC Offset: UTC+5:30
- IANA Timezone: Asia/Kolkata
- Daylight Saving: None - India does not observe daylight saving time
- Major Cities: Mumbai, Delhi, Bangalore, Chennai, Kolkata
- Coverage: India and Sri Lanka
Quick Reference: SST to IST
Remember: IST is 16.5 hours ahead of SST year-round. Refers to India Standard Time, not Israel Standard Time.
Frequently Asked Questions
What is the time difference between SST and IST?
Samoa Standard Time (SST) is UTC-11, while India Standard Time (IST) is UTC+5:30. IST is 16.5 hours ahead of SST. When it is 12:00 PM in Pago Pago, it is 4:30 AM the next day in Mumbai.
When does this SST to IST conversion apply?
It applies year-round. Neither side observes daylight saving — American Samoa never has, and India has not used DST since 1945. The 16.5-hour offset is identical every day of the year.
How does the time difference change throughout the year?
It does not. Both SST and IST are fixed offsets with no daylight saving, so the gap stays at exactly 16.5 hours regardless of season. The half-hour comes from India's UTC+5:30 offset, which is unusual but stable.
What are the best times for SST–IST business calls?
The 16.5-hour offset is challenging — Pago Pago evening aligns with Indian morning. For example, 7:00–9:00 PM SST is 11:30 AM–1:30 PM IST the next day, comfortable for both Pago Pago evening and Indian midday.
Which countries and regions use IST?
India Standard Time is used across India and Sri Lanka. Major Indian cities include Mumbai, Delhi, Bangalore, Chennai, and Kolkata. Note: this converter uses IST for India Standard Time, not Israel Standard Time, which uses the same abbreviation but a different offset (UTC+2).
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
- • IST is always 16.5 hours ahead of SST — the half-hour offset is real, not a typo.
- • Neither side observes daylight saving, so the offset is stable year-round.
- • Pago Pago evening aligns with Indian morning — aim for 7:00 PM SST or later for live calls.
- • IST here means India Standard Time (UTC+5:30), not Israel Standard Time (UTC+2).
- • Always include the date when scheduling SST↔IST meetings; almost every conversion crosses midnight.
- • For one-off calls, double-check the IANA zones (Pacific/Pago_Pago, Asia/Kolkata) in your calendar tool.