GMT
Greenwich Mean Time
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NST
Newfoundland Standard Time
GMT -3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

GMT is 3 hours and 30 minutes ahead of NST. GMT uses GMT +0, and NST uses GMT -3:30 for this comparison.

For example, 12:00 pm GMT is 8:30 am NST. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 12:30pm-5pm GMT, which is 9am-1:30pm NST.

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

Time Difference

Greenwich Mean Time is 3 hours and 30 minutes ahead of Newfoundland Standard Time
12:00 pm12:00 in GMT is 8:30 am08:30 in NST

GMT to NST call time
Best time for a conference call or a meeting is between 12:30pm-5pm in GMT which corresponds to 9am-1:30pm in NST

12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
8:30 am08:30 Newfoundland Standard Time (NST). Offset UTC -3:30 hours

12:00 pm12:00 GMT / 8:30 am08:30 NST

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

Greenwich Mean Time

Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

Principal Cities: The largest city in the GMT time zone is London in United Kingdom, with about 7.557 million people. Other major cities in this time zone include Abidjan, Dakar, Grand Dakar, Accra.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

GMT Time Zone Geo Map
GMT timezone map

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

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 99,182 people. Other major cities in this time zone include Mount Pearl, Corner Brook, Conception Bay South.

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 back for one hour from 2am to 1amStart: Newfoundland Standard Time (NST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Newfoundland Standard Time (NST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

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