PDT to SST Converter
Convert time between Pacific Daylight Time (PDT) and Samoa Standard Time (SST)
Pacific Daylight Time (PDT)
Samoa Standard Time (SST)
Time Difference
Samoa Standard Time (SST) is 0 hours ahead of Pacific Daylight Time (PDT)
Select Date
Select Time
Quick Reference
| PDT | SST |
|---|---|
| 19:00 | 15:00 |
| 21:00 | 17:00 |
| 23:00 | 19:00 |
| 01:00 | 21:00 |
| 03:00 | 23:00 |
| 05:00 | 01:00 |
| 07:00 | 03:00 |
| 09:00 | 05:00 |
| 11:00 | 07:00 |
| 13:00 | 09:00 |
| 15:00 | 11:00 |
| 17:00 | 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 PDT to SST Time Conversion
Converting time between Pacific Daylight Time (PDT) and Samoa Standard Time (SST) bridges the US West Coast and the South Pacific. PDT is UTC-7, while SST is UTC-11 and stays constant year-round (American Samoa does not observe daylight saving time). That makes SST 4 hours behind PDT during the US daylight saving period — from the second Sunday in March to the first Sunday in November. Outside that window the West Coast is on PST (UTC-8) and the gap shrinks to 3 hours.
This converter uses the IANA timezone database (America/Los_Angeles) to handle DST transitions automatically. Whether you're booking a call between Los Angeles, San Francisco, or Vancouver and Pago Pago during the summer months, or coordinating with Pacific-based teams from West Coast offices, the tool removes the manual offset arithmetic.
Common Use Cases for PDT to SST Conversion
Business & Work
- Scheduling video calls between Los Angeles, San Francisco, or Seattle and American Samoa in summer
- Coordinating US West Coast–Pacific remote team handoffs
- Planning conference calls that bridge Pacific and Samoan working hours
Personal & Travel
- Calling family in American Samoa from the US West Coast or British Columbia
- Planning flight connections via Los Angeles, San Francisco, or Honolulu
- Coordinating watch parties for live MLB, NBA, or NFL games during American summer
Time Zone Information
Pacific Daylight Time (PDT)
- UTC Offset: UTC-7
- IANA Timezone: America/Los_Angeles
- Daylight Saving: Second Sunday in March to first Sunday in November (PDT)
- Major Cities: Los Angeles, San Francisco, Seattle, Portland, Vancouver
- Coverage: US Pacific time zone and British Columbia during summer months
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: PDT to SST
Remember: SST is 4 hours behind PDT. Outside US daylight saving (early November to mid-March) the West Coast is on PST (UTC-8) and the gap is 3 hours.
Frequently Asked Questions
What is the time difference between PDT and SST?
Pacific Daylight Time (PDT) is UTC-7, while Samoa Standard Time (SST) is UTC-11. SST is 4 hours behind PDT. When it is 12:00 PM in Los Angeles, it is 8:00 AM in Pago Pago.
When does this PDT to SST conversion apply?
It applies during US daylight saving, from the second Sunday in March to the first Sunday in November. Outside that window the West Coast is on PST (UTC-8) and the gap drops to 3 hours. American Samoa stays on SST (UTC-11) year-round.
How does the time difference change throughout the year?
The gap is 4 hours during PDT (mid-March to early November) and 3 hours during PST (early November to mid-March). American Samoa never observes daylight saving, so any seasonal change comes from the US side.
What are the best times for PDT–SST business calls?
A 4-hour gap leaves a comfortable afternoon overlap: 1:00 PM PDT is 9:00 AM SST. Late-morning Pago Pago and early-afternoon Los Angeles is the most usable live-call window.
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 PDT?
Pacific Daylight Time applies in the US Pacific time zone and British Columbia during summer — California, Oregon, Washington, Nevada (most), plus BC. Major cities include Los Angeles, San Francisco, Seattle, Portland, and Vancouver.
Pro Tips
- • SST is 4 hours behind PDT — both sides share the same calendar day.
- • American Samoa never observes daylight saving, so any seasonal shift comes from the US side switching between PDT and PST.
- • Outside US daylight saving (early November to mid-March) the West Coast is on PST (UTC-8) and the gap drops to 3 hours.
- • Early afternoon PDT and morning SST is the most workable overlap window for live calls.
- • Recurring meetings drift twice a year unless you re-pin them around the PDT/PST switch.
- • For one-off calls, double-check the IANA zones (America/Los_Angeles, Pacific/Pago_Pago) in your calendar tool.