ESTTime.nowEastern Standard Time

ADT Time Now

12369
Saturday, November 7, 2026
Atlantic Standard Time (AST)

ADT is not in use right now: Atlantic Time is on AST (UTC−4). The clock shows the time at ADT's own offset, UTC−3.

ADT is 2 hours ahead of EST (Eastern Standard Time).

What time zone is ADT in?

Clocks in ADT run on Atlantic Time (AST, UTC−4); software knows the zone as America/Halifax.

Does ADT observe daylight saving time?

Yes. ADT is on standard time now. The next changes:

  • Sunday 14 March 2027: clocks go forward at 02:00 to 03:00 (AST → ADT)
  • Sunday 7 November 2027: clocks go back at 02:00 to 01:00 (ADT → AST)

ADT time zone

Atlantic Time

Atlantic Standard Time (AST)

IANA: America/Halifax · UTC−4

Daylight saving time in ADT

Not in effect now

Next change: Sun 14 Mar, clocks go forward 1 hour (02:00 → 03:00)

Sunrise and sunset in ADT today

Sunrise 06:59 · Sunset 16:57

Daylight 9h 58m · Solar noon 11:58

Time in ADT vs major world cities

CityLocal timeDifference from ADT
New York Sat1 hour behind
Los Angeles Sat4 hours behind
London Sat4 hours ahead
Paris Sat5 hours ahead
Dubai Sat8 hours ahead
Mumbai Sat9.5 hours ahead
Singapore Sat12 hours ahead
Tokyo Sat13 hours ahead
Sydney Sun15 hours ahead
Johannesburg Sat6 hours ahead
São Paulo Sat1 hour ahead
Chicago Sat2 hours behind

November 2026 calendar for ADT

MonTueWedThuFriSatSun
1
2345678
9101112131415
16171819202122
23242526272829
30

Frequently asked questions about ADT

What time zone is ADT in?
Atlantic Time (AST), UTC−4; IANA zone America/Halifax.
When do the clocks change in ADT?
Next on Sunday 14 March 2027, when clocks go forward from 02:00 to 03:00.