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Time-zone abbreviation converters

Convert popular abbreviations with their meanings and UTC offsets stated explicitly. This avoids silently treating ambiguous labels such as CST or IST as if they had only one worldwide meaning.

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Definitions used by TimeNivo

UTCCoordinated Universal TimeUTC+00:00
GMTGreenwich Mean TimeUTC+00:00
ESTEastern Standard TimeUTC−05:00
EDTEastern Daylight TimeUTC−04:00
CSTCentral Standard TimeUTC−06:00
CDTCentral Daylight TimeUTC−05:00
MSTMountain Standard TimeUTC−07:00
MDTMountain Daylight TimeUTC−06:00
PSTPacific Standard TimeUTC−08:00
PDTPacific Daylight TimeUTC−07:00
ISTIndia Standard TimeUTC+05:30
GSTGulf Standard TimeUTC+04:00
JSTJapan Standard TimeUTC+09:00
SGTSingapore Standard TimeUTC+08:00
PHTPhilippine TimeUTC+08:00
CETCentral European TimeUTC+01:00
EETEastern European TimeUTC+02:00
AESTAustralian Eastern Standard TimeUTC+10:00

Popular conversions

EST to ISTPST to ISTCST to ISTGMT to ISTUTC to ISTEDT to ISTPDT to ISTEST to GMTEST to PSTPST to ESTCET to ESTEST to CSTGMT to ESTUTC to ESTPST to GMTPST to CSTCST to ESTUTC to PSTGMT to PSTCET to ISTGST to ISTIST to GSTUTC to GSTGMT to GSTUTC to JSTJST to ESTJST to PSTJST to ISTSGT to ISTEST to SGTPST to SGTPHT to ESTUTC to AESTAEST to ESTAEST to ISTCET to GMTEET to ISTUTC to CETUTC to EETUTC to SGTUTC to PHTGMT to CETEDT to GMTPDT to GMTEDT to PDTPDT to EDTGST to ESTGST to PSTIST to ESTIST to PSTJST to GMTSGT to GMTPHT to ISTAEST to GMT

Authoritative references

TimeNivo links to the primary standards and data publishers behind its terminology and calculations. These are editorial references, not paid links.

IANA Time Zone Database Unicode CLDR locale data NIST Internet Time Service