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NDT/NST
Newfoundland Daylight Time
GMT -2:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Newfoundland Time is on daylight saving time: NDT (UTC−2:30) until Sun, Nov 1.
CDT
Cuba Daylight Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:30 am09:30 NDT (UTC-2:30), Oct 8, 2026 = 8:00 am08:00 CDT (UTC-4), Oct 8, 2026

NDT is 1 hour and 30 minutes ahead of CDT.

NST and CDT examples

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

NST is 30 minutes ahead of CDT.

How the time difference changes

For most of the year, NDT is 1 hour and 30 minutes ahead of CDT Caribbean. At other times of the year, NST is 1 hour and 30 minutes ahead of CST Caribbean. Briefly around clock changes, NST is 30 minutes ahead of CDT Caribbean.

For most of the year, working hours of 9:00 am to 5:00 pm in NDT correspond to 7:30 am to 3:30 pm in CDT Caribbean. At other times of the year, working hours of 9:00 am to 5:00 pm in NST correspond to 7:30 am to 3:30 pm in CST Caribbean.For most of the year, working hours of 09:00 to 17:00 in NDT correspond to 07:30 to 15:30 in CDT Caribbean. At other times of the year, working hours of 09:00 to 17:00 in NST correspond to 07:30 to 15:30 in CST Caribbean.

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

Time Difference

Newfoundland Daylight Time is 1 hour and 30 minutes ahead of Cuba Daylight Time.
9:30 am09:30 in NDT is 8:00 am08:00 in CDT

NDT to CDT call time
Best time for a conference call or a meeting is between 10:30am-5pm10:30-17:00 in NDT which corresponds to 9am-3:30pm09:00-15:30 in CDT

9:30 am09:30 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours
8:00 am08:00 Cuba Daylight Time (CDT). Offset UTC -4:00 hours

9:30 am09:30 NDT / 8:00 am08:00 CDT

NDTCDT
12:00am10:30pm
1:00am11:30pm
2:00am12:30am
3:00am1:30am
4:00am2:30am
5:00am3:30am
6:00am4:30am
7:00am5:30am
8:00am6:30am
9:00am7:30am
10:00am8:30am
11:00am9:30am
12:00pm10:30am
1:00pm11:30am
2:00pm12:30pm
3:00pm1:30pm
4:00pm2:30pm
5:00pm3:30pm
6:00pm4:30pm
7:00pm5:30pm
8:00pm6:30pm
9:00pm7:30pm
10:00pm8:30pm
11:00pm9:30pm
00:0022:30
01:0023:30
02:0000:30
03:0001:30
04:0002:30
05:0003:30
06:0004:30
07:0005:30
08:0006:30
09:0007:30
10:0008:30
11:0009:30
12:0010:30
13:0011:30
14:0012:30
15:0013:30
16:0014:30
17:0015:30
18:0016:30
19:0017:30
20:0018:30
21:0019:30
22:0020:30
23:0021:30

Newfoundland Standard Time

Offset: NST is 3 hours and 30 minutes behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada

Principal Cities: The largest city in the NST time zone is St Johns in Canada, with about 110,525 people. Other major cities in this time zone include Conception Bay South, Mount Pearl, Corner Brook.

French: HNT - Heure Normale de Terre-Neuve

NST Time Zone Geo Map
NST timezone map

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).

Daylight saving time clock moves forward for one hourEnd: Newfoundland Standard Time (NST) 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.

Daylight saving time clock moves back for one hourStart: Newfoundland Standard Time (NST) 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.

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

Cuba Daylight Time

Offset: CDT is 4 hours behind Greenwich Mean Time (GMT) and is used in Caribbean

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, Camaguey, Holguin, Guantanamo.

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).

Daylight saving time clock moves forward for one hourStart: 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. Daylight saving starts annually on the second Sunday of March.

Daylight saving time clock moves back for one hourEnd: Cuba Daylight Time (CDT) ends on Sunday, November 1, 2026 at 1:00 am01:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 12:00 am00:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See 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
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time