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AST - Atlantic Standard Time

Sunday, 1 November 2026 · AST · UTC−4

Atlantic Standard Time. Represented here by the IANA zone America/Halifax. This zone observes daylight saving time. America/Halifax details

AST against the world

columns: AST hours
PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07Outlined: everyone can be pinged

Daylight saving

All DST dates
Clocks forward
Sunday, 14 March 2027UTC−4 → UTC−3
Clocks back
Sunday, 7 November 2027UTC−3 → UTC−4

Cities on AST time

HalifaxCanadaDartmouthCanadaLower SackvilleCanadaCharlottetownCanadaDowntown HalifaxCanadaHalifax West EndCanadaBedfordCanadaWoodlawnCanadaHalifax South EndCanadaCole HarbourCanadaNew GlasgowCanadaClayton Park WestCanadaArmdaleCanada

Convert from AST

All converters
AST → ESTAST → EDTAST → PSTAST → PDTAST → CSTAST → CDTAST → MSTAST → MDTAST → GMTAST → UTCAST → BSTAST → CETAST → CESTAST → EETAST → GSTAST → IST

Questions

What time is it in AST now?

AST is UTC−4 (Atlantic Standard Time). The clock at the top of this page is live.

Which countries use AST?

Canada. Largest city: Halifax.

Does AST change for daylight saving?

Yes. The next change is Sunday, 14 March 2027, from UTC−4 to UTC−3.