ADT to Tsawwassen Time Converter

Updating current time…
AST/ADT
Atlantic Standard Time
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Atlantic Time is on standard time: AST (UTC−4) until Sun, Mar 14, 2027.
Keep ADT (UTC−3)
Tsawwassen
CanadaMST
UTC−7
3h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

10:30 am10:30 AST (UTC-4), Nov 1, 2026 = 7:30 am07:30 MST (UTC-7), Nov 1, 2026

AST is 3 hours ahead of Tsawwassen.

How the time difference changes

In 2026, ADT is 4 hours ahead of Tsawwassen for most of the year. Until Mar 8, 2026, AST is 4 hours ahead of Tsawwassen. From Nov 1, 2026 to Mar 14, 2027, AST is 3 hours ahead of Tsawwassen. Briefly around clock changes, ADT is 5 hours ahead of Tsawwassen.

In 2026, working hours of 9:00 am to 6:00 pm in ADT correspond to 5:00 am to 2:00 pm in Tsawwassen for most of the year. At other times that year, working hours of 9:00 am to 6:00 pm in AST correspond to 5:00 am to 2:00 pm in Tsawwassen or working hours of 9:00 am to 6:00 pm in AST correspond to 6:00 am to 3:00 pm in Tsawwassen.In 2026, working hours of 09:00 to 18:00 in ADT correspond to 05:00 to 14:00 in Tsawwassen for most of the year. At other times that year, working hours of 09:00 to 18:00 in AST correspond to 05:00 to 14:00 in Tsawwassen or working hours of 09:00 to 18:00 in AST correspond to 06:00 to 15:00 in Tsawwassen.

Compare ADT time with Tsawwassen time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Atlantic Standard Time is 3 hours ahead of MST (Mountain Standard Time).
10:30 am10:30 in AST is 7:30 am07:30 in Tsawwassen, Canada

AST to Tsawwassen call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in AST which corresponds to 9am-3pm09:00-15:00 in Tsawwassen

10:30 am10:30 Atlantic Standard Time (AST). Offset UTC -4:00 hours
7:30 am07:30 MST (Mountain Standard Time) (Tsawwassen, Canada). Offset UTC -7:00 hours

10:30 am10:30 AST / 7:30 am07:30 Tsawwassen, Canada

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
ASTTsawwassen, Canada
8:00pm previous day PDT UTC-7
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Atlantic Daylight Time

Offset: ADT is 3 hours behind Greenwich Mean Time (GMT).

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, Moncton, Saint John, Fredericton.

French: HAA - Heure Avancée de l'Atlantique

Map of the areas on Atlantic Daylight Time (ADT)
ADT part of the year

Today the shaded areas are on UTC−4 (Atlantic Standard Time).

Open the world time zone map© OpenStreetMap

Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Atlantic Standard Time (AST).

123456789101112End: Atlantic Daylight Time (ADT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were 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.

123456789101112Start: Atlantic Daylight Time (ADT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

See Canada daylight saving time and 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 - Brasilia Time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • FKT - Falkland Islands Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • PYT - Paraguay Time
  • SRT - Suriname Time
  • UYT - Uruguay Time

Tsawwassen Time Zone and Facts

Time Zone

Abbreviation / Offset
MST – Mountain Standard Time, UTC-7 (no daylight saving time)
Clock Changes
No clock changes scheduled.
Canada daylight saving time · Clock changes worldwide

Tsawwassen Facts

Country
Canada
Population
21,588
Currency
Dollar (CAD)
Geographic Coordinates
49° 01' N Latitude / 123° 04' W Longitude
International Dialing Code
+1
More About Tsawwassen
Tsawwassen local time and city facts