Home > Time Zones > Abbreviations > S – Sierra Time Zone

S – Sierra Time Zone (Military Time)

Also known as: s – Sierra Time, Sierra

Time zone map of S
Areas with same time currently (UTC -6:00).
Currently has same time zone offset as S (UTC -6:00) 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

Email time zone indicator: -0600

An email sent from someone in the Sierra Time Zone (S) time zone will have the time zone listed as "-0600" in the headers of the email. (However, "-0600" does not have to be in Sierra Time Zone, as other time zones could have the same UTC offset).

Where and when is S observed?

Sierra Time Zone is often used in aviation and the military as another name for UTC -6:00. 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".

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

Other time zones in UTC -6:00

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

Sierra time now


Tuesday, December 1, 2015

Military time displayed using the 24 hour clock.

Find current time and time zone by city


Example cities

Costa Rica – San Jose (All Year)

Time Zone Map with DST

Time zone map

Time Zone Map

Time zones by continent/region

See all Time zone abbreviations

Time zones Tools