CDT to SST Converter
Convert time between Central Daylight Time (CDT) and Samoa Standard Time (SST)
Central Daylight Time (CDT)
Samoa Standard Time (SST)
Time Difference
Samoa Standard Time (SST) is 0 hours ahead of Central Daylight Time (CDT)
Select Date
Select Time
Quick Reference
| CDT | SST |
|---|---|
| 21:00 | 15:00 |
| 23:00 | 17:00 |
| 01:00 | 19:00 |
| 03:00 | 21:00 |
| 05:00 | 23:00 |
| 07:00 | 01:00 |
| 09:00 | 03:00 |
| 11:00 | 05:00 |
| 13:00 | 07:00 |
| 15:00 | 09:00 |
| 17:00 | 11:00 |
| 19:00 | 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 CDT to SST Time Conversion
Converting time between Central Daylight Time (CDT) and Samoa Standard Time (SST) bridges the central United States and the South Pacific. CDT is UTC-5, while SST is UTC-11 and stays constant year-round (American Samoa does not observe daylight saving time). That makes SST 6 hours behind CDT during the US daylight saving period — from the second Sunday in March to the first Sunday in November. Outside that window the central US is on CST (UTC-6) and the gap shrinks to 5 hours.
This converter uses the IANA timezone database (America/Chicago) to handle DST transitions automatically. Whether you're booking a call between Chicago and Pago Pago, coordinating with Pacific-based teams during the American summer months, or planning travel via Dallas or Houston, the tool removes the manual offset arithmetic.
Common Use Cases for CDT to SST Conversion
Business & Work
- Scheduling video calls between Chicago, Dallas, or Houston and American Samoa
- Coordinating US Central–Pacific remote team handoffs during the summer months
- Planning conference calls that bridge Central US and Samoan working hours
Personal & Travel
- Calling family in American Samoa from the central US states
- Planning flight connections via Los Angeles or Honolulu from Chicago
- Coordinating watch parties for live MLB, NFL, or other US sports
Time Zone Information
Central Daylight Time (CDT)
- UTC Offset: UTC-5
- IANA Timezone: America/Chicago
- Daylight Saving: Second Sunday in March to first Sunday in November (CDT)
- Major Cities: Chicago, Houston, Dallas, San Antonio, Austin
- Coverage: US Central time zone 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: CDT to SST
Remember: SST is 6 hours behind CDT. Outside US daylight saving (early November to mid-March) the central US is on CST (UTC-6) and the gap drops to 5 hours.
Frequently Asked Questions
What is the time difference between CDT and SST?
Central Daylight Time (CDT) is UTC-5, while Samoa Standard Time (SST) is UTC-11. SST is 6 hours behind CDT. When it is 12:00 PM in Chicago, it is 6:00 AM in Pago Pago.
When does this CDT to SST conversion apply?
CDT applies in the central US from the second Sunday in March to the first Sunday in November. Outside that window the central US is on CST (UTC-6) and the gap drops to 5 hours. American Samoa stays on SST (UTC-11) year-round.
How does the time difference change throughout the year?
The gap is 6 hours during CDT (mid-March to early November) and 5 hours during CST (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 CDT–SST business calls?
A 6-hour gap leaves a narrow afternoon overlap: 3:00 PM CDT is 9:00 AM SST. Late-afternoon Chicago and morning Pago Pago 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 CDT?
Central Daylight Time applies in the US Central time zone during summer — most of Texas, Illinois, Missouri, Minnesota, Iowa, Wisconsin, and parts of neighboring states. Major cities include Chicago, Houston, Dallas, San Antonio, and Austin.
Pro Tips
- • SST is 6 hours behind CDT — both sides share the same calendar day.
- • American Samoa never observes daylight saving, so any seasonal shift comes from the US side switching between CDT and CST.
- • Outside US daylight saving (early November to mid-March) the central US is on CST (UTC-6) and the gap drops to 5 hours.
- • Late-afternoon CDT 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 CDT/CST switch.
- • For one-off calls, double-check the IANA zones (America/Chicago, Pacific/Pago_Pago) in your calendar tool.