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NDT to ADT Converter

Updating current time…
NDT
Newfoundland Daylight Time
GMT -2:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ADT
Atlantic Daylight Time
GMT -3
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:30 am09:30 NDT (UTC-2:30), Oct 11, 2026 = 9:00 am09:00 ADT (UTC-3), Oct 11, 2026

NDT is 30 minutes ahead of ADT.

NDT and ADT examples

These examples always use NDT (UTC-2:30) and ADT (UTC-3). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

NDT is 30 minutes ahead of ADT.

How the time difference changes

For most of the year, NDT is 30 minutes ahead of ADT. At other times of the year, NST is 30 minutes ahead of AST. Briefly around clock changes, NDT is 1 hour and 30 minutes ahead of AST or NST is 30 minutes behind ADT.

For most of the year, working hours of 9:00 am to 5:00 pm in NDT correspond to 8:30 am to 4:30 pm in ADT. At other times of the year, working hours of 9:00 am to 5:00 pm in NST correspond to 8:30 am to 4:30 pm in AST.For most of the year, working hours of 09:00 to 17:00 in NDT correspond to 08:30 to 16:30 in ADT. At other times of the year, working hours of 09:00 to 17:00 in NST correspond to 08:30 to 16:30 in AST.

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

Time Difference

Newfoundland Daylight Time is 30 minutes ahead of Atlantic Daylight Time.
9:30 am09:30 in NDT is 9:00 am09:00 in ADT

NDT to ADT call time
Best time for a conference call or a meeting is between 9:30am-5pm09:30-17:00 in NDT which corresponds to 9am-4:30pm09:00-16:30 in ADT

9:30 am09:30 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours
9:00 am09:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours

9:30 am09:30 NDT / 9:00 am09:00 ADT

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

Newfoundland Daylight Time

Offset: NDT is 2 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 NDT 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: HAT - Heure Avancée de Terre-Neuve

NDT Time Zone Geo Map
NDT timezone map

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

Daylight saving time clock moves forward for one hourStart: Newfoundland Daylight Time (NDT) started 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. Daylight saving starts annually on the second Sunday of March.

Daylight saving time clock moves back for one hourEnd: Newfoundland Daylight Time (NDT) ends 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 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

NDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0230 - basic
  • -02:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0230 - sign character (-) followed by a four digit time providing hours (02) and minutes (30) of the offset. Indicates an offset of two hours and thirty minutes to the west of the zero meridian.
IANA/Olson: Reflects NDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/St_Johns
  • Canada/Newfoundland

Atlantic Daylight Time

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

Countries using this time zone: Bermuda, Canada, Greenland

Principal Cities: The largest city in the ADT time zone is Halifax in Canada, with about 471,559 people. Other major cities in this time zone include Sydney, Dartmouth, Moncton, Saint John.

French: HAA - Heure Avancée de l'Atlantique

ADT Time Zone Geo Map
ADT timezone map

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

Daylight saving time clock moves forward for one hourStart: Atlantic Daylight Time (ADT) started 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. Daylight saving starts annually on the second Sunday of March.

Daylight saving time clock moves back for one hourEnd: Atlantic Daylight Time (ADT) ends 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 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

ADT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -03 - basic short
  • -0300 - basic
  • -03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Papa - Military abbreviation for ADT
  • P - short form of 'Papa'
IANA/Olson: Reflects ADT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Glace_Bay
  • America/Goose_Bay
  • America/Halifax
  • America/Moncton
  • America/Thule
  • Atlantic/Bermuda
  • Canada/Atlantic
Time zones with the GMT -3 offset:
  • ADT - Atlantic Daylight Time
  • PMT - Pierre & Miquelon Standard Time
  • PMST - Pierre & Miquelon Standard Time
  • AMST - Amazon Summer Time
  • ART - Argentina Time
  • BRT - Brasília time
  • CLST - Chile Summer Time
  • FKST - Falkland Islands Summer Time
  • GFT - French Guiana Time
  • P - Papa Time Zone
  • PYST - Paraguay Summer Time
  • SRT - Suriname Time
  • UYT - Uruguay Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT