Updating current time…
CDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NST
UTC−3:30
30m ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am08:00 CDT (UTC-4), Nov 5, 2026 = 8:30 am08:30 NST (UTC-3:30), Nov 5, 2026

CDT is 30 minutes behind NST.

CDT and NST examples

These examples always use CDT (UTC-4) and NST (UTC-3:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

CDT is 30 minutes behind NST.

How the time difference changes

In 2026, CDT Caribbean is 1 hour and 30 minutes behind NDT for most of the year. Until Mar 8, 2026, CST Caribbean is 1 hour and 30 minutes behind NST. From Nov 1, 2026 to Mar 14, 2027, CDT Caribbean is 30 minutes behind NST.

In 2026, working hours of 9:00 am to 6:00 pm in CDT Caribbean correspond to 10:30 am to 7:30 pm in NDT for most of the year. At other times that year, working hours of 9:00 am to 6:00 pm in CST Caribbean correspond to 10:30 am to 7:30 pm in NST or working hours of 9:00 am to 6:00 pm in CDT Caribbean correspond to 9:30 am to 6:30 pm in NST.In 2026, working hours of 09:00 to 18:00 in CDT Caribbean correspond to 10:30 to 19:30 in NDT for most of the year. At other times that year, working hours of 09:00 to 18:00 in CST Caribbean correspond to 10:30 to 19:30 in NST or working hours of 09:00 to 18:00 in CDT Caribbean correspond to 09:30 to 18:30 in NST.

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

Time Difference

Cuba Daylight Time is 30 minutes behind Newfoundland Standard Time.
8:00 am08:00 in CDT is 8:30 am08:30 in NST

CDT to NST call time
Best time for a conference call or a meeting is between 9am-5:30pm09:00-17:30 in CDT which corresponds to 9:30am-6pm09:30-18:00 in NST

8:00 am08:00 Cuba Daylight Time (CDT). Offset UTC -4:00 hours
8:30 am08:30 Newfoundland Standard Time (NST). Offset UTC -3:30 hours

8:00 am08:00 CDT / 8:30 am08:30 NST

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
CDTNST
12:30am
1:30am
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5:30am
6:30am
7:30am
8:30am
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10:30am
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12:30pm
1:30pm
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5:30pm
6:30pm
7:30pm
8:30pm
9:30pm
10:30pm
11:30pm
00:30
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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

Newfoundland Standard Time

Offset: NST is 3 hours and 30 minutes behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada

Principal Cities: The largest city in the NST time zone is St. John's in Canada, with about 110,525 people. Other major cities in this time zone include Corner Brook, Grand Falls-Windsor, Gander, Clarenville.

French: HNT - Heure Normale de Terre-Neuve

Map of the areas on Newfoundland Standard Time (NST)
NST part of the year

Today all shaded areas are on NST.

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

123456789101112Start: Newfoundland Standard Time (NST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Newfoundland Standard Time (NST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See Canada daylight saving time and upcoming clock changes worldwide.

NST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0330 - basic
  • -03:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0330 - sign character (-) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates an offset of three hours and thirty minutes to the west of the zero meridian.
IANA/Olson: Reflects NST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/St_Johns
  • Canada/Newfoundland