ADT is UTC-3, 3 hours behind UTC. It stands for Atlantic Daylight Time.
ADT stands for Atlantic Daylight Time and is UTC-3, which is 3 hours behind UTC.
ADT is used only while daylight saving time is in effect. When it ends, the same places return to AST (UTC-4).
Cities that use ADT: Halifax.
| When it is… | 9:00 AM ADT | 12:00 PM ADT | 5:00 PM ADT |
|---|---|---|---|
| UTC | 12:00 PM | 3:00 PM | 8:00 PM |
| PST (Pacific) | 4:00 AM | 7:00 AM | 12:00 PM |
| MST (Mountain) | 5:00 AM | 8:00 AM | 1:00 PM |
| CST (Central US) | 6:00 AM | 9:00 AM | 2:00 PM |
| EST (Eastern) | 7:00 AM | 10:00 AM | 3:00 PM |
| CET (Central Europe) | 1:00 PM | 4:00 PM | 9:00 PM |
| EET (Eastern Europe) | 2:00 PM | 5:00 PM | 10:00 PM |
| IST (India) | 5:30 PM | 8:30 PM | 1:30 AM (+1 day) |
| JST (Japan) | 9:00 PM | 12:00 AM (+1 day) | 5:00 AM (+1 day) |
| AEST (Sydney) | 10:00 PM | 1:00 AM (+1 day) | 6:00 AM (+1 day) |
ADT stands for Atlantic Daylight Time.
ADT is UTC-3.
ADT is UTC-3 and AST is UTC-4, a difference of 1 hour. Places that use both switch between them when daylight saving time starts and ends. The live line above shows which one applies right now.