Time Zone Abbreviations – Time Zones in North America

ADST — Atlantic Daylight Saving Time

AST — Atlantic Summer Time

HAA — Heure Avancée de l'Atlantique (French)

ADST — Alaska Daylight Saving Time

AT — Alaska Time

AT — Atlantic Time

AST — Tiempo Estándar del Atlántico (Spanish)

HNA — Heure Normale de l'Atlantique (French)

CDST — Central Daylight Saving Time

NACDT — North American Central Daylight Time

HAC — Heure Avancée du Centre (French)

CT — Central Time

NACST — North American Central Standard Time

CST — Tiempo Central Estándar (Spanish)

HNC — Heure Normale du Centre (French)

EDST — Eastern Daylight Savings Time

NAEDT — North American Eastern Daylight Time

HAE — Heure Avancée de l'Est (French)

EDT — Tiempo de verano del Este (Spanish)

EGST — East Greenland Summer Time

EGT — Eastern Greenland Time

ET — Eastern Time

NAEST — North American Eastern Standard Time

ET — Tiempo del Este (Spanish)

HNE — Heure Normale de l'Est (French)

UTC — Coordinated Universal Time

GT — Greenwich Time

HADT — Hawaii Daylight Time

HAST — Hawaii-Aleutian Standard Time

MDST — Mountain Daylight Saving Time

NAMDT — North American Mountain Daylight Time

HAR — Heure Avancée des Rocheuses (French)

MT — Mountain Time

NAMST — North American Mountain Standard Time

HNR — Heure Normale des Rocheuses (French)

HAT — Heure Avancée de Terre-Neuve (French)

HNT — Heure Normale de Terre-Neuve (French)

PDST — Pacific Daylight Saving Time

NAPDT — North American Pacific Daylight Time

HAP — Heure Avancée du Pacifique (French)

PT — Pacific Time

NAPST — North American Pacific Standard Time

PT — Tiempo del Pacífico (Spanish)

HNP — Heure Normale du Pacifique (French)

WGST — West Greenland Summer Time

WGT — Western Greenland Time