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NST to MST Converter

NST
Newfoundland Standard Time
GMT -3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MST
Mountain Standard Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

NST is 3 hours and 30 minutes ahead of MST. NST uses GMT -3:30, and MST uses GMT -7 for this comparison.

For example, 8:30 am NST is 5:00 am MST. Use the converter above to adjust the date or time and create a shareable meeting link.

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

MST is a fixed UTC-7 standard-time offset. For current Mountain Time, compare NST to MDT.

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

Time Difference

Newfoundland Standard Time is 3 hours and 30 minutes ahead of Mountain Standard Time
8:30 am08:30 in NST is 5:00 am05:00 in MST

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

8:30 am08:30 Newfoundland Standard Time (NST). Offset UTC -3:30 hours
5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours

8:30 am08:30 NST / 5:00 am05:00 MST

NSTMST
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

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

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.446 million people. Other major cities in this time zone include Calgary, Edmonton, El Paso, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

MST Time Zone Geo Map
MST 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 Mountain Daylight Time (MDT).

Daylight saving time clock moves back for one hour from 2am to 1amStart: Mountain Standard Time (MST) 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: Mountain Standard Time (MST) 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.

MST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for MST
  • T - short form of 'Tango'
IANA/Olson: Reflects MST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Ciudad_Juarez
  • America/Creston
  • America/Dawson
  • America/Dawson_Creek
  • America/Denver
  • America/Edmonton
  • America/Fort_Nelson
  • America/Hermosillo
  • America/Inuvik
  • America/Mazatlan
  • America/Phoenix
  • America/Shiprock
  • America/Whitehorse
  • America/Yellowknife
  • Canada/Mountain
  • Canada/Yukon
  • MST
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Arizona
  • US/Mountain
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT