Saint John to CDT Caribbean Time Converter

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Saint John
CanadaAST
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CDT
Cuba Daylight Time
UTC−4
same time
12am
3am
6am
9am
12pm
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

Saint John and CDT have the same local time.

How the time difference changes

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

In 2026, working hours of 9:00 am to 6:00 pm in Saint John 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 Saint John correspond to 8:00 am to 5:00 pm in CST Caribbean or working hours of 9:00 am to 6:00 pm in Saint John correspond to 9:00 am to 6:00 pm in CDT Caribbean.In 2026, working hours of 09:00 to 18:00 in Saint John 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 Saint John correspond to 08:00 to 17:00 in CST Caribbean or working hours of 09:00 to 18:00 in Saint John correspond to 09:00 to 18:00 in CDT Caribbean.

Compare Saint John 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 Saint John, Canada is 10:30 am10:30 in CDT

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

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

10:30 am10:30 Saint John, Canada / 10:30 am10:30 CDT

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Hourly time comparison
Saint John, CanadaCDT
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Saint John 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.
Clock Changes
Canada daylight saving time · Clock changes worldwide

Saint John Facts

Country
Canada
Alternative Names
Saint John, Saint-Jean, Sejnt Dzhon, Sent DZon, Sent-Dzhon, Urbs Sancti Ioannis Canadensis, YSJ, seinteujon, senta jona, sentcxhn, sentojon, sheng yue han, snt gwn, snt jan, Сейнт Джон, Сент Џон, Сент-Джон, סנט גון, سنت جان, سینٹ جان, سینٹ جان، نیو برنسوک, सेंट जॉन, เซนต์จอห์น, სენტ-ჯონი, セントジョン, セント・ジョン, 圣约翰, 세인트존
Population
71,808
Currency
Dollar (CAD)
Geographic Coordinates
45° 16' N Latitude / 66° 03' W Longitude
International Dialing Code
+1
More About Saint John
Saint John local time and city facts

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.

Open the world time zone map© OpenStreetMap

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