Time Zone Abbreviations
Abbreviations like IST, CST, and PST can be ambiguous across regions. Use this dictionary to check meaning, UTC offset, and exact IANA zones before converting.
Popular abbreviations
Definitions & Guides
Abbreviations A-Z
EST
Eastern Standard Time
EDT
Eastern Daylight Time
PST
Multiple meanings
PDT
Pacific Daylight Time
BST
Multiple meanings
GMT
Greenwich Mean Time
UTC
Coordinated Universal Time
CET
Central European Time
CEST
Central European Summer Time
IST
Multiple meanings
PKT
Pakistan Standard Time
CST
Multiple meanings
ACDT
ACDT time
ACST
ACST time
ADT
ADT time
AEDT
AEDT time
AEST
AEST time
AKDT
AKDT time
AKST
AKST time
AST
AST time
AWST
AWST time
CAT
CAT time
CDT
Multiple meanings
CHST
CHST time
EAT
EAT time
EEST
EEST time
EET
EET time
HDT
HDT time
HKT
HKT time
HST
HST time
IDT
IDT time
JST
JST time
KST
KST time
MDT
MDT time
MSK
MSK time
MST
MST time
NDT
NDT time
NST
NST time
NZDT
NZDT time
NZST
NZST time
SAST
SAST time
SST
SST time
WAT
WAT time
WEST
WEST time
WET
WET time
WIB
WIB time
WIT
WIT time
WITA
WITA time
Related tools
Convert abbreviations with location-aware rules in the Time Zone Converter and browse exact IANA entries in the Time Zones directory.