Also known as: s – Sierra Time, Sierra

Time zone map of S
Areas with same time currently (UTC -6).
Currently has same time zone offset as S (UTC -6) but different time zone name.

Sierra Time Zone (S) is 6 hours behind Coordinated Universal Time (UTC). This time zone is a military time zone.

See full time zone map

Where and When is S Observed?

Sierra Time Zone is often used in aviation and the military as another name for UTC -6. Sierra Time Zone is also commonly used at sea between longitudes 97.5° West and 82.5° West.

The letter S may be used as a suffix to denote a time being in the Sierra Time Zone, such as 08:00S or 0800S. This is spoken as "zero eight hundred Sierra".

Some places with the same time as Sierra Time Zone

  • Mexico City, Ciudad de México, Mexico
  • Guatemala City, Guatemala
  • Managua, Nicaragua
  • Salt Lake City, Utah, USA
  • Denver, Colorado, USA
  • Edmonton, Alberta, Canada
  • San Salvador, El Salvador
  • Tegucigalpa, Honduras
  • Calgary, Alberta, Canada
  • San Jose, Costa Rica
  • Belmopan, Belize
  • Inuvik, Northwest Territories, Canada
  • Easter Island, Chile
  • Regina, Saskatchewan, Canada
  • Galapagos Islands, Ecuador
  • Rapid City, South Dakota, USA

Only showing up to 16 cities, others may also be observing Sierra Time Zone.

This time zone is in use, but not observed in any location at this time.

Other Time Zones in UTC -6

Some time zones exist that have the same offset as S, but can be found under a different name:

  • CST – Central Standard Time
  • EAST – Easter Island Standard Time
  • GALT – Galapagos Time
  • MDT – Mountain Daylight Time

S time now

00:00:00

Showing 24 hour format.

UTC – Coordinated

Universal Time is the common time standard across the world.

Time Zones Map

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