Juan Santiago, Dominican Republic

AST (Atlantic Standard Time)

GMT -4

AST (Atlantic Standard Time)

Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)

Principal Cities: The largest city in the AST timezone is Santo Domingo from Dominican Republic with population about 2.202 million people. Other major cities in the area are Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Atlantic Daylight Time (ADT).

Start: AST starts annually on the same date and time. and clocks were set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

End: AST ends annually on the same date and time. and clocks are set one hour forward on Sunday, March 8, 2020, at 2:00 (2:00 am) local time.

French: HNA - Heure Normale de l'Atlantique

Spanish: AST - Tiempo Estándar del Atlántico

Juan Santiago, Dominican Republic Time Zone Geo Map — Juan Santiago, Dominican Republic timezone map

Juan Santiago, Dominican Republic representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

-04 - basic short
-0400 - basic
-04:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

-0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four hour and zero minutes time differences to the west of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

Quebec - Military abbreviation for AST
Q - short form of 'Quebec'

IANA/Olson: Reflects AST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

America/Anguilla
America/Antigua
America/Aruba
America/Barbados
America/Blanc-Sablon
America/Curacao
America/Dominica
America/Glace_Bay
America/Goose_Bay
America/Grenada
America/Guadeloupe
America/Halifax
America/Kralendijk
America/Lower_Princes
America/Marigot
America/Martinique
America/Moncton
America/Montserrat
America/Port_of_Spain
America/Puerto_Rico
America/Santo_Domingo
America/St_Barthelemy
America/St_Kitts
America/St_Lucia
America/St_Thomas
America/St_Vincent
America/Thule
America/Tortola
America/Virgin
Atlantic/Bermuda
Canada/Atlantic

AST Abbreviation: Several time zones share AST abbreviation and it could refer to these time zones

Atlantic Standard Time - UTC -4
Arabia Standard Time - UTC +3

Time zones with the GMT -4 offset:

AST - Atlantic Standard Time
EDT - Eastern Daylight Time
AMT - Amazon Time
BOT - Bolivia Time
CDT - Cuba Daylight Time
CLT - Chile Standard Time
FKT - Falkland Island Time
GYT - Guyana Time
PYT - Paraguay Time
Q - Quebec Time Zone
VET - Venezuelan Standard Time
-04 -