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Tam O'Shanter-Sullivan to ADT Time Converter

Updating current time…
Tam O'Shanter-Sullivan
Canada
EDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ADT
Atlantic Daylight Time
GMT -3
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am08:00 EDT (UTC-4), Oct 6, 2026 = 9:00 am09:00 ADT (UTC-3), Oct 6, 2026

Tam O'Shanter-Sullivan is 1 hour behind ADT.

How the time difference changes

For most of the year, Tam O'Shanter-Sullivan is 1 hour behind ADT. At other times of the year, Tam O'Shanter-Sullivan is 1 hour behind AST. Briefly around clock changes, Tam O'Shanter-Sullivan and AST have the same time or Tam O'Shanter-Sullivan is 2 hours behind ADT.

For most of the year, working hours of 9:00 am to 5:00 pm in Tam O'Shanter-Sullivan correspond to 10:00 am to 6:00 pm in ADT. At other times of the year, working hours of 9:00 am to 5:00 pm in Tam O'Shanter-Sullivan correspond to 10:00 am to 6:00 pm in AST.For most of the year, working hours of 09:00 to 17:00 in Tam O'Shanter-Sullivan correspond to 10:00 to 18:00 in ADT. At other times of the year, working hours of 09:00 to 17:00 in Tam O'Shanter-Sullivan correspond to 10:00 to 18:00 in AST.

Compare Tam O'Shanter-Sullivan time with ADT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

EDT (Eastern Daylight Time) is 1 hour behind Atlantic Daylight Time.
8:00 am08:00 in Tam O'Shanter-Sullivan, Canada is 9:00 am09:00 in ADT

Tam O'Shanter-Sullivan to ADT call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in Tam O'Shanter-Sullivan which corresponds to 10am-5pm10:00-17:00 in ADT

8:00 am08:00 EDT (Eastern Daylight Time) (Tam O'Shanter-Sullivan, Canada). Offset UTC -4:00 hours
9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours

8:00 am08:00 Tam O'Shanter-Sullivan, Canada / 9:00 am09:00 ADT

Tam O'Shanter-Sullivan, CanadaADT
12:00am1:00am
1:00am2:00am
2:00am3:00am
3:00am4:00am
4:00am5:00am
5:00am6:00am
6:00am7:00am
7:00am8:00am
8:00am9:00am
9:00am10:00am
10:00am11:00am
11:00am12:00pm
12:00pm1:00pm
1:00pm2:00pm
2:00pm3:00pm
3:00pm4:00pm
4:00pm5:00pm
5:00pm6:00pm
6:00pm7:00pm
7:00pm8:00pm
8:00pm9:00pm
9:00pm10:00pm
10:00pm11:00pm
11:00pm12:00am
00:0001:00
01:0002:00
02:0003:00
03:0004:00
04:0005:00
05:0006:00
06:0007:00
07:0008:00
08:0009:00
09:0010:00
10:0011:00
11:0012:00
12:0013:00
13:0014:00
14:0015:00
15:0016:00
16:0017:00
17:0018:00
18:0019:00
19:0020:00
20:0021:00
21:0022:00
22:0023:00
23:0000:00

Tam O'Shanter-Sullivan Information

Time Zone

Abbreviation / Name
EDT - Eastern Daylight Time
EST - Eastern Standard Time
UTC / GMT Offset
-4:00 hours during Eastern Daylight Time, currently in use.
-5:00 hours during Eastern Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hourSunday, March 8, 2026 at 2:00 amSunday, March 8, 2026 at 02:00 local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 amSunday, March 8, 2026 at 03:00 local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves backward for one hourSunday, November 1, 2026 at 2:00 amSunday, November 1, 2026 at 02:00 local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 amSunday, November 1, 2026 at 01:00 local standard time instead. Also called Fall Back or switch to Winter Time.
Clock Changes
Canada daylight saving time · Clock changes worldwide

Tam O'Shanter-Sullivan Facts

Country
Canada
Population
27,446
Currency
Dollar (CAD)
Geographic Coordinates
43° 46' N Latitude / 79° 17' W Longitude
International Dialing Code
+1

Atlantic Daylight Time

Offset: ADT is 3 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Bermuda, Canada, Greenland

Principal Cities: The largest city in the ADT time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Dartmouth, Moncton, Saint John.

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 time zone. During winter, some places set clocks back one hour and observe Atlantic Standard Time (AST).

Daylight saving time clock moves forward for one hourStart: Atlantic Daylight Time (ADT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

Daylight saving time clock moves back for one hourEnd: Atlantic Daylight Time (ADT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

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 an offset of three hours 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
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard 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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT