Definition
The standard time observed in the sixth time zone west of the Prime Meridian, set six hours behind Coordinated Universal Time (UTC-6). In the United States, Central Standard Time covers a band running through states such as Texas, Oklahoma, Kansas, Nebraska, the Dakotas, Minnesota, Iowa, Missouri, Arkansas, Louisiana, Mississippi, Alabama, Tennessee, Kentucky, Illinois, and Wisconsin.
Plain English
The clock time used in the central part of the United States during winter, six hours behind the worldwide reference time (UTC).
Context Anchor
Pilots encounter Central Standard Time when converting local times to aviation time for weather briefings, flight planning, airport hours, and FAA publications that discuss time zones.
Derivation
Called 'Central' because it covers the central band of the contiguous United States. 'Standard' means the baseline, non-daylight-saving version of the time zone — the time used when clocks are not shifted forward in summer.
Why Pilots Care
Correct use prevents timing errors when coordinating departures, interpreting observations, and crossing time zones during flight planning.
Intuition Check
Do not read standard as meaning “normal all year.” Here, standard means daylight saving time is not being used. Central Standard Time is UTC−6; Central Daylight Time is UTC−5.
Example Sentence 1
At 0800 Central Standard Time, the pilot filed a flight plan showing a departure of 1400 UTC.
Example Sentence 2
When departing Minneapolis at 0900 Central Standard Time, the arrival estimate at the destination accounted for the time-zone change.