ADT
Atlantic Daylight Time
GMT -3
HAT
Heure Avancée de Terre-Neuve
GMT -2

Time Difference

Atlantic Daylight Time is 0 hours and 30 minutes behind Heure Avancée de Terre-Neuve
8:00 am08:00 in ADT is 8:30 am08:30 in HAT

ADT to HAT call time
Best time for a conference call or a meeting is between 8am-5:30pm in ADT which corresponds to 8:30am-6pm in HAT

8:00 am08:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
8:30 am08:30 Heure Avancée de Terre-Neuve (HAT). Offset UTC -2:30 hours

8:00 am08:00 ADT / 8:30 am08:30 HAT

ADT HAT
12am (midnight) 12:30 am
1am 1:30 am
2am 2:30 am
3am 3:30 am
4am 4:30 am
5am 5:30 am
6am 6:30 am
7am 7:30 am
8am 8:30 am
9am 9:30 am
10am 10:30 am
11am 11:30 am
12pm (noon) 12:30 pm
1pm 1:30 pm
2pm 2:30 pm
3pm 3:30 pm
4pm 4:30 pm
5pm 5:30 pm
6pm 6:30 pm
7pm 7:30 pm
8pm 8:30 pm
9pm 9:30 pm
10pm 10:30 pm
11pm 11:30 pm
0:00 0:30
1:00 1:30
2:00 2:30
3:00 3:30
4:00 4:30
5:00 5:30
6:00 6:30
7:00 7:30
8:00 8:30
9:00 9:30
10:00 10:30
11:00 11:30
12:00 12:30
13:00 13:30
14:00 14:30
15:00 15:30
16:00 16:30
17:00 17:30
18:00 18:30
19:00 19:30
20:00 20:30
21:00 21:30
22:00 22:30
23:00 23:30

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

ADT Time Zone Geo Map
ADT timezone map

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).

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Atlantic Daylight Time (ADT) started on Sunday, March 13, 2022 at 2:00 am local time and clocks were set one hour forward to Sunday, March 13, 2022, 3:00 am. Daylight saving starts annually the on second Sunday of March

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Atlantic Daylight Time (ADT) ends on Sunday, November 6, 2022 at 2:00 am local time and clocks are set one hour back to Sunday, November 6, 2022, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November

ADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ADT
  • P - short form of 'Papa'
IANA/Olson: Reflects ADT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Halifax
  • America/Moncton
  • America/Thule
  • Atlantic/Bermuda
  • Canada/Atlantic
ADT Abbreviation: Several time zones share ADT abbreviation and it could refer to these time zones
  • Atlantic Daylight Time - UTC -3
  • Arabian Daylight Time - UTC +4
  • Apia Daylight Time - UTC -10
Time zones with the GMT -3 offset:
  • 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 - Brasília 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

Heure Avancée de Terre-Neuve

Offset: HAT is 2 hours and 30 minutes behind Greenwich Mean Time (GMT) and is used in North America

HAT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0230 - basic
  • -02:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0230 - sign character (-) followed by a four digit time providing hours (02) and minutes (30) of the offset. Indicates two hour and thirty minutes time differences to the west of the zero meridian.