ADT - Atlantic Daylight Time, Time Zone

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ADT
Atlantic Daylight Time
(UTC -3)

Atlantic Daylight Time (ADT) is -3 hours behind Coordinated Universal Time (UTC).
ADT time is used in: North America

Also known as: HAA Time Zone

ADT time now:

07:46

Thu, 22 January 2026

Abbr.	Time zone name	Region	Offset
ADT	Atlantic Daylight Time	North America	UTC -3
AMST	Amazon Summer Time	South America	UTC -3
ART	Argentina Time	South America	UTC -3
BRT	Brasília time	South America	UTC -3
CLST	Chile Summer Time	South America	UTC -3
FKST	Falkland Islands Summer Time	South America	UTC -3
GFT	French Guiana Time	South America	UTC -3
PMST	Pierre & Miquelon Standard Time	North America	UTC -3
PYST	Paraguay Summer Time	South America	UTC -3
SRT	Suriname Time	South America	UTC -3
UYT	Uruguay Time	South America	UTC -3
WGT	West Greenland Time	North America	UTC -3