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CanadaAST
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CDT
UTC−4
same time
12am
3am
6am
9am
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3pm
6pm
9pm

Quick answers

Selected conversion

10:30 am10:30 AST (UTC-4), Nov 1, 2026 = 10:30 am10:30 CDT (UTC-4), Nov 1, 2026

Charlottetown and CDT have the same local time.

How the time difference changes

In 2026, Charlottetown is 1 hour ahead of CDT Caribbean for most of the year. Until Mar 8, 2026, Charlottetown is 1 hour ahead of CST Caribbean. From Nov 1, 2026 to Mar 14, 2027, Charlottetown and CDT Caribbean have the same time.

In 2026, working hours of 9:00 am to 6:00 pm in Charlottetown correspond to 8:00 am to 5:00 pm in CDT Caribbean for most of the year. At other times that year, working hours of 9:00 am to 6:00 pm in Charlottetown correspond to 8:00 am to 5:00 pm in CST Caribbean or working hours of 9:00 am to 6:00 pm in Charlottetown correspond to 9:00 am to 6:00 pm in CDT Caribbean.In 2026, working hours of 09:00 to 18:00 in Charlottetown correspond to 08:00 to 17:00 in CDT Caribbean for most of the year. At other times that year, working hours of 09:00 to 18:00 in Charlottetown correspond to 08:00 to 17:00 in CST Caribbean or working hours of 09:00 to 18:00 in Charlottetown correspond to 09:00 to 18:00 in CDT Caribbean.

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

Time Difference

AST (Atlantic Standard Time) and Cuba Daylight Time have the same local time.
10:30 am10:30 in Charlottetown, Canada is 10:30 am10:30 in CDT

Charlottetown to CDT call time
Best time for a conference call or a meeting is between 9am-6pm09:00-18:00 in Charlottetown which corresponds to 9am-6pm09:00-18:00 in CDT

10:30 am10:30 AST (Atlantic Standard Time) (Charlottetown, Canada). Offset UTC -4:00 hours
10:30 am10:30 Cuba Daylight Time (CDT). Offset UTC -4:00 hours

10:30 am10:30 Charlottetown, Canada / 10:30 am10:30 CDT

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Hourly time comparison
Charlottetown, CanadaCDT
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Charlottetown Time Zone and Facts

Time Zone

Abbreviation / Offset
AST – Atlantic Standard Time, UTC-4 (now)
ADT – Atlantic Daylight Time, UTC-3 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (ADT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (AST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.

Charlottetown Facts

Country
Canada
Alternative Names
Baile Shearlot, Baile Sheàrlot, Carlotauno, Carolinapolis, Charlottetown, Sarlotetaunas, Sarlottaoun, Sarlottaun, Sharlottaun, Sharluttaun, YYG, carlattavun, saralatata'una, sharottotaun, syalleostaun, tsharlwt tawn, xia luo te dun, Ĉarlotaŭno, Şarlottaun, Šarlotetaunas, Σάρλοτταουν, Шарлоттаун, Шарлъттаун, שרלוטטאון, تشارلوت تاون, شارلوت‌تاون, شارلٹٹاؤن, ਸ਼ਾਰਲਟਟਾਊਨ, சார்லட்டவுன், შარლოტტაუნი, シャーロットタウン, 夏洛特顿, 샬럿타운
Population
38,809
Currency
Dollar (CAD)
Geographic Coordinates
46° 14' N Latitude / 63° 07' W Longitude
International Dialing Code
+1

Cuba Daylight Time

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

Countries using this time zone: Cuba

Principal Cities: The largest city in the CDT time zone is Havana in Cuba, with about 2.164 million people. Other major cities in this time zone include Santiago de Cuba, Camagüey, Holguín, Guantánamo.

Map of the areas on Cuba Daylight Time (CDT)
CDT part of the year

Today all shaded areas are on CDT.

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

123456789101112Start: Cuba Daylight Time (CDT) started on Sunday, March 8, 2026 at 12:00 am00:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 1:00 am01:00.

123456789101112End: Cuba Daylight Time (CDT) ends on Sunday, November 7, 2027 at 1:00 am01:00 local time and clocks are set one hour back to Sunday, November 7, 2027, 12:00 am00:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See Cuba daylight saving time and upcoming clock changes worldwide.

CDT 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 CDT
  • Q - short form of 'Quebec'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Havana
  • Cuba
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
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
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time