COST (Colombia Summer Time) is one of the well-known names of UTC-4 time zone which is 4h. behind of UTC (Coordinated Universal Time).The time offset from UTC can be written as -04:00.
It's used as the standard time.
|AST||Atlantic Standard Time|
|CDT||Cuba Daylight Time|
|CLT||Chile Standard Time|
|EDT||Eastern Daylight Time|
|FKT||Falkland Islands Time|
|VET||Venezuelan Standard Time|
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