ADT to PT Converter
Time Difference
Atlantic Daylight Time is 4 hours ahead of Pacific Daylight Time
5:00 am05:00 in ADT is 1:00 am01:00 in PDT
ADT to PT call time
Best time for a conference call or a meeting is between 1pm-6pm in ADT which corresponds to 8am-1pm in PT
5:00 am05:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
1:00 am01:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
5:00 am05:00 ADT / 1:00 am01:00 PDT
ADT | PT |
---|---|
12am (midnight) | 8pm |
1am | 9pm |
2am | 10pm |
3am | 11pm |
4am | 12am (midnight) |
5am | 1am |
6am | 2am |
7am | 3am |
8am | 4am |
9am | 5am |
10am | 6am |
11am | 7am |
12pm (noon) | 8am |
1pm | 9am |
2pm | 10am |
3pm | 11am |
4pm | 12pm (noon) |
5pm | 1pm |
6pm | 2pm |
7pm | 3pm |
8pm | 4pm |
9pm | 5pm |
10pm | 6pm |
11pm | 7pm |
0:00 | 20:00 |
1:00 | 21:00 |
2:00 | 22:00 |
3:00 | 23:00 |
4:00 | 0:00 |
5:00 | 1:00 |
6:00 | 2:00 |
7:00 | 3:00 |
8:00 | 4:00 |
9:00 | 5:00 |
10:00 | 6:00 |
11:00 | 7:00 |
12:00 | 8:00 |
13:00 | 9:00 |
14:00 | 10:00 |
15:00 | 11:00 |
16:00 | 12:00 |
17:00 | 13:00 |
18:00 | 14:00 |
19:00 | 15:00 |
20:00 | 16:00 |
21:00 | 17:00 |
22:00 | 18:00 |
23:00 | 19:00 |
Atlantic Daylight Time
Offset: ADT is 3 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Bermuda, Canada, Greenland
Principal Cities: The largest city in the ADT timezone is Halifax from Canada with population about 359,111 people. Other major cities in the area are Sydney, Dartmouth, Saint John, Moncton
French: HAA - Heure Avancée de l'Atlantique

Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Atlantic Standard Time (AST).
Start: Atlantic Daylight Time (ADT) started on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Atlantic Daylight Time (ADT) ends on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
ADT representations, usage and related time zones
- -03 - basic short
- -0300 - basic
- -03:00 - extended
- -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates three hour and zero minutes time differences to the west of the zero meridian.
- Papa - Military abbreviation for ADT
- P - short form of 'Papa'
- America/Glace_Bay
- America/Goose_Bay
- America/Halifax
- America/Moncton
- America/Thule
- Atlantic/Bermuda
- Canada/Atlantic
- ADT - Atlantic Daylight Time
- PMT - Pierre & Miquelon Standard Time
- PMST - Pierre & Miquelon Standard Time
- WGT - West Greenland Time
- AMST - Amazon Summer Time
- ART - Argentina Time
- BRT - BrasÃlia time
- CLST - Chile Summer Time
- FKST - Falkland Islands Summer Time
- GFT - French Guiana Time
- P - Papa Time Zone
- PYST - Paraguay Summer Time
- SRT - Suriname Time
- UYT - Uruguay Time
Pacific Time
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
PT representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight hour and zero minutes time differences to the west of the zero meridian.
- Uniform - Military abbreviation for PT
- U - short form of 'Uniform'
- Pacific Time - UTC -8
- Ponape Time - UTC +11
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone