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Time Zones

Browse the world's time zones by their three- or four-letter abbreviation. Each zone shows live local time, UTC offset, and the IANA designations it covers.

Featured time zones

All time zones

Ambiguous abbreviations

Abbreviations are not unique. These are the ones on this site with more than one common meaning — when it matters, write the UTC offset or an IANA zone name instead.

AbbreviationMeaning on this siteAlso used for
CST Central Standard Time (UTC -06:00) China Standard Time (UTC +08:00); Cuba Standard Time (UTC −05:00)
IST India Standard Time (UTC +05:30) Irish Standard Time (UTC +01:00); Israel Standard Time (UTC +02:00)
BST British Summer Time (UTC +01:00) Bangladesh Standard Time (UTC +06:00); British Standard Time (UTC +01:00)
AST Atlantic Standard Time (UTC -04:00) Arabia Standard Time (UTC +03:00)
GST Gulf Standard Time (UTC +04:00) South Georgia Time (UTC −02:00)
MST Mountain Standard Time (UTC -07:00) Malaysia Standard Time (UTC +08:00)
EST Eastern Standard Time (UTC -05:00) Australian Eastern Standard Time (UTC +10:00)
ART Argentina Time (UTC -03:00) Arabic (Egypt) Time (UTC +02:00)

Looking for single-letter zones such as Zulu or Romeo? See the military time zones. To compare zones hour by hour, use the time zone converter.