Atlantic Standard Time (AST)

2:59:45PM

Friday, October 16, 2026

Right now in Halifax: ADT (UTC-3)

Fixed AST (UTC-4): 1:59 PM

Strictly speaking, AST is UTC-4, but right now these places are on ADT (UTC-3) because of daylight saving time. Most people who write AST mean the current local time, so the converter follows it; the fixed time is shown above.

Convert AST to your time

AST/ADT

Atlantic Standard Time

Fri, Oct 16

ADTUTC-3

UTC

Coordinated Universal Time

Fri, Oct 16

UTC+3h

PST/PDT

Pacific Standard Time

Fri, Oct 16

PDTUTC-7-4h

Finding your time zone…

Shared working hours (9:00–18:00)

Convert AST to other time zones

AST to UTC AST to GMT AST to EST AST to CST AST to MST AST to PST AST to CET AST to MSK AST to GST AST to PKT AST to IST AST to SGT AST to PHT AST to CST (China)AST to JST AST to KST

Convert other time zones to AST

UTC to AST GMT to AST EST to AST CST to AST MST to AST PST to AST CET to AST MSK to AST GST to AST PKT to AST IST to AST SGT to AST PHT to AST CST (China) to AST JST to AST KST to AST

Places on UTC-4 right now

Cities whose local time currently equals UTC-4, including places on daylight saving time.

New YorkUnited States
TorontoCanada
CaracasVenezuela
Santo DomingoDominican Republic
HavanaCuba
La PazBolivia
IndianapolisUnited States
San JuanPuerto Rico
DetroitUnited States
Port-au-PrinceHaiti
ManausBrazil
Campo GrandeBrazil
CuiabáBrazil
Porto VelhoBrazil
GeorgetownGuyana
NassauBahamas
Boa VistaBrazil
LouisvilleUnited States
WillemstadCuracao
BridgetownBarbados
Fort-de-FranceMartinique
St John'sAntigua and Barbuda
Port of SpainTrinidad and Tobago
OranjestadAruba
St CroixU.S. Virgin Islands
KingstownSaint Vincent and the Grenadines
CastriesSaint Lucia
Les AbymesGuadeloupe
RoseauDominica
BasseterreSaint Kitts and Nevis
KralendijkBonaire, Saint Eustatius and Saba
Road TownBritish Virgin Islands
ProvidencialesTurks and Caicos Islands
Saint George'sGrenada
GustaviaSaint Barthelemy
MarigotSaint Martin
JasperUnited States
The ValleyAnguilla
PhilipsburgSint Maarten
BradesMontserrat

Countries that use AST

Related time zones

ADT All time zones

Questions and answers

What is AST?

AST stands for Atlantic Standard Time, a time zone at UTC-4.

Is it AST right now?

No. Daylight saving time is in effect, so the local time is ADT (UTC-3) instead of AST.

What is the difference between AST and UTC?

AST is 4 hours behind UTC.

Where is AST used?

AST is used in: Canada, Puerto Rico, Dominican Republic, Barbados, Trinidad and Tobago, Bermuda.