Current Time in America/Moncton Time Zone

Geographic Scope and Usage

America/Moncton applies to the province of New Brunswick, Canada. It is one of several Canadian zones using Atlantic Standard Time. Other IANA zones at the same standard offset include America/Glace_Bay (Nova Scotia), America/Blanc-Sablon (Quebec, which does not observe DST), and zones for Caribbean islands such as America/Barbados and America/Curacao. Within Canada, this zone is used by the Maritime provinces (New Brunswick, Nova Scotia, Prince Edward Island) and parts of Quebec east of the Natashquan River. Moncton, as the anchor city, is the largest urban centre in the zone.

Offset and Abbreviation

Standard time is UTC-04:00, denoted as AST (Atlantic Standard Time). During daylight saving time, clocks advance to UTC-03:00, denoted as ADT (Atlantic Daylight Time). The abbreviation AST is shared with other regions at UTC-04:00, such as the Caribbean, but ADT is specific to zones that observe DST in the Atlantic time zone.

Daylight Saving Behaviour

America/Moncton observes daylight saving time, following the North American schedule: clocks spring forward on the second Sunday of March and fall back on the first Sunday of November. Upcoming changes: 2025-03-09 (forward to ADT), 2025-11-02 (back to AST), 2026-03-08 (forward), 2026-11-01 (back). This pattern aligns with most of Canada and the United States, providing consistent scheduling for cross-border business.

Major Cities and Regions

Key cities in this zone: Moncton (population ~144,000), Saint John (~126,000), Fredericton (~108,000), and Miramichi (~17,000). All are in New Brunswick. The zone also covers rural areas and smaller communities across the province. Note that the neighboring province of Nova Scotia uses America/Glace_Bay, which shares the same offset and DST rules, so there is no time difference within the Maritime region.

Business Hours and Call Scheduling

America/Moncton is UTC-04:00 (AST) in winter and UTC-03:00 (ADT) in summer. For scheduling with North American partners: during AST, Moncton is 1 hour ahead of Eastern Standard Time (EST, UTC-05:00) and 4 hours behind Coordinated Universal Time (UTC). During ADT, it is 1 hour ahead of Eastern Daylight Time (EDT, UTC-04:00). For Europe: during ADT, Moncton is 5 hours behind London (BST) and 6 hours behind Central European Summer Time (CEST). For Asia: during AST, Moncton is 12 hours behind Singapore (SGT) and 13 hours behind Tokyo (JST). Best overlap for calls with Europe: late morning in Moncton (10:00-12:00 ADT) corresponds to late afternoon in Europe (15:00-17:00 BST/CEST). With Asia: early morning in Moncton (8:00-10:00 AST) aligns with evening in Asia (20:00-22:00 SGT/JST).

Practical Guidance

When scheduling across zones, always confirm whether DST is active in both locations, as the offset difference may change. For example, when New York is on EDT (UTC-04:00) and Moncton is on ADT (UTC-03:00), the difference is 1 hour. But when New York is on EST (UTC-05:00) and Moncton is on AST (UTC-04:00), the difference remains 1 hour. However, during the transition weeks, the difference may be 0 or 2 hours if one location has already changed and the other has not. Always check the current offset for both zones.