Updating current time…
ADT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Dominican RepublicAST
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:00 am09:00 ADT (UTC-3), Oct 13, 2026 = 8:00 am08:00 AST (UTC-4), Oct 13, 2026

ADT is 1 hour ahead of Monte Plata.

How the time difference changes

For most of the year, ADT is 1 hour ahead of Monte Plata. From Nov 1, 2026 to Mar 14, 2027, AST and Monte Plata have the same time.

For most of the year, working hours of 9:00 am to 5:00 pm in ADT correspond to 8:00 am to 4:00 pm in Monte Plata. At other times of the year, working hours of 9:00 am to 5:00 pm in AST correspond to 9:00 am to 5:00 pm in Monte Plata.For most of the year, working hours of 09:00 to 17:00 in ADT correspond to 08:00 to 16:00 in Monte Plata. At other times of the year, working hours of 09:00 to 17:00 in AST correspond to 09:00 to 17:00 in Monte Plata.

Compare ADT time with Monte Plata time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Atlantic Daylight Time is 1 hour ahead of AST (Atlantic Standard Time).
9:00 am09:00 in ADT is 8:00 am08:00 in Monte Plata, Dominican Republic

ADT to Monte Plata call time
Best time for a conference call or a meeting is between 10am-5pm10:00-17:00 in ADT which corresponds to 9am-4pm09:00-16:00 in Monte Plata

9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
8:00 am08:00 AST (Atlantic Standard Time) (Monte Plata, Dominican Republic). Offset UTC -4:00 hours

9:00 am09:00 ADT / 8:00 am08:00 Monte Plata, Dominican Republic

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Hourly time comparison
ADTMonte Plata, Dominican Republic
11:00pm previous day
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23:00 previous day
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Atlantic Daylight Time

Offset: ADT is 3 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bermuda, Canada, Greenland

Principal Cities: The largest city in the ADT time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Moncton, Saint John, Fredericton.

French: HAA - Heure Avancée de l'Atlantique

Map of the areas on Atlantic Daylight Time (ADT)
ADT part of the year

Today all shaded areas are on ADT.

Daylight Saving: Atlantic Daylight Time (ADT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Atlantic Standard Time (AST).

123456789101112Start: Atlantic Daylight Time (ADT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Atlantic Daylight Time (ADT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

ADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ADT
  • P - short form of 'Papa'
IANA/Olson: Reflects ADT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Halifax
  • America/Moncton
  • America/Thule
  • Atlantic/Bermuda
  • Canada/Atlantic
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasília time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • SRT - Suriname Time
  • UYT - Uruguay Time

Monte Plata Time Zone and Facts

Time Zone

Abbreviation / Offset
AST – Atlantic Standard Time, UTC-4 (no daylight saving time)

Monte Plata Facts

Country
Dominican Republic
Alternative Names
Monte Plata, San Antonio de Monte Plata, Монте Плата
Population
15,532
Currency
Peso (DOP)
Geographic Coordinates
18° 48' N Latitude / 69° 47' W Longitude