ADT stands for Atlantic Daylight Time. It is UTC-3 from Coordinated Universal Time (UTC).ADT is used in the North America region and corresponds to the America/Halifax IANA timezone.
ADT stands for Atlantic Daylight Time. It is UTC-3 from Coordinated Universal Time (UTC).
The UTC offset for Atlantic Daylight Time (ADT) is UTC-3. This means ADT is -3 hours from Coordinated Universal Time.
ADT is used by locations in the America/Halifax timezone region (North America). Use the converter below to convert ADT to other time zones like EST, PST, or GMT.
UTC-3
When it's 09:57:30 PM in ADT, here's the time in other major cities:
Scheduling meetings with teams in Atlantic Daylight Time? Here are the recommended windows:
ADT stands for Atlantic Daylight Time. It is UTC-3 from Coordinated Universal Time (UTC).
The current time in Atlantic Daylight Time (ADT) is 09:57:30 PM on Wednesday, March 11, 2026.ADT is UTC-3. This page displays a live, automatically updating clock for ADT.
Major cities using ADT include Halifax, and more. ADT is observed in 1 countries including Canada.
Yes, regions using ADT typically switch to ADT (Atlantic Daylight Time) during daylight saving time. DST usually begins on the second Sunday in March and ends on the first Sunday in November in the United States.
To convert ADT to Eastern Standard Time (EST), you need to account for the UTC offset difference.ADT is UTC-3, while EST is UTC-5. Use our time zone converter for instant, accurate conversions.
The best time to schedule a meeting in ADT is during standard business hours: 9:00 AM to 5:00 PM ADT. For cross-timezone meetings, use our meeting planner to find optimal overlap times.
The UTC offset for Atlantic Daylight Time (ADT) is UTC-3. This means ADT is -3 hours from Coordinated Universal Time. During daylight saving time, this changes to UTC-3.
ADT is -3 hours from GMT (Greenwich Mean Time). GMT and UTC are effectively the same for time zone calculations. So when it's 12:00 PM (noon) in GMT, it's 9:00 AM in ADT.