Updating current time…
ADT/AST
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Atlantic Time is on daylight saving time: ADT (UTC−3) until Sun, Nov 1.
MexicoCST
UTC−6
3h behind
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Quick answers

Selected conversion

9:00 am09:00 ADT (UTC-3), Oct 15, 2026 = 6:00 am06:00 CST (UTC-6), Oct 15, 2026

ADT is 3 hours ahead of San Miguel de Allende.

How the time difference changes

For most of the year, ADT is 3 hours ahead of San Miguel de Allende. From Nov 1, 2026 to Mar 14, 2027, AST is 2 hours ahead of San Miguel de Allende.

For most of the year, working hours of 9:00 am to 6:00 pm in ADT correspond to 6:00 am to 3:00 pm in San Miguel de Allende. At other times of the year, working hours of 9:00 am to 6:00 pm in AST correspond to 7:00 am to 4:00 pm in San Miguel de Allende.For most of the year, working hours of 09:00 to 18:00 in ADT correspond to 06:00 to 15:00 in San Miguel de Allende. At other times of the year, working hours of 09:00 to 18:00 in AST correspond to 07:00 to 16:00 in San Miguel de Allende.

Compare AST time with San Miguel de Allende time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Atlantic Daylight Time is 3 hours ahead of CST (Central Standard Time).
9:00 am09:00 in ADT is 6:00 am06:00 in San Miguel de Allende, Mexico

ADT to San Miguel de Allende call time
Best time for a conference call or a meeting is between 12pm-6pm12:00-18:00 in ADT which corresponds to 9am-3pm09:00-15:00 in San Miguel de Allende

9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
6:00 am06:00 CST (Central Standard Time) (San Miguel de Allende, Mexico). Offset UTC -6:00 hours

9:00 am09:00 ADT / 6:00 am06:00 San Miguel de Allende, Mexico

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Hourly time comparison
ADTSan Miguel de Allende, Mexico
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Atlantic Standard Time

Offset: AST is 4 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: 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 time zone is Santo Domingo in the Dominican Republic, with about 2.202 million people. Other major cities in this time zone include Santiago de los Caballeros, Halifax, San Juan, San Pedro de Macorís.

French: HNA - Heure Normale de l'Atlantique

Spanish: AST - Tiempo Estándar del Atlántico

Map of the areas on Atlantic Standard Time (AST)
AST all year AST part of the year

Today the lighter areas are on UTC−3 (ADT).

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Atlantic Daylight Time (ADT).

123456789101112End: Atlantic Standard Time (AST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Atlantic Standard Time (AST) starts 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. Standard time starts annually on the first Sunday of November.

See upcoming clock changes worldwide.

AST 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 an offset of four hours 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
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time

San Miguel de Allende Time Zone and Facts

Time Zone

Abbreviation / Offset
CST – Central Standard Time, UTC-6 (no daylight saving time)

San Miguel de Allende Facts

Country
Mexico
Alternative Names
San Migel de Aljende, San Migel de Aljendė, San Miguel Allende, San Miguel de Allende, San-Migel'-de-Al'ende, san-migel-de-aliende, sanmigeldeayende, sheng mi ge er de a lian de, sn mygwl d alnd, Сан-Мигель-де-Альенде, Сан-Міґель-де-Альєнде, סן מיגל דה איינדה, سن میگول د الند, სან-მიგელ-დე-ალიენდე, サン・ミゲル・デ・アジェンデ, 聖米格爾德阿連德, 산미겔데아옌데
Population
174,615
Currency
Peso (MXN)
Geographic Coordinates
20° 54' N Latitude / 100° 44' W Longitude
International Dialing Code
+52
More About San Miguel de Allende