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MST to NDT Converter

Updating current time…
MDT/MST
Mountain Daylight Time
GMT -6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Mountain Time is on daylight saving time: MDT (UTC−6) until Sun, Nov 1.

Arizona stays on MST (UTC−7).

Denver · MDT (UTC−6)Arizona · MST all year (UTC−7)
NDT
Newfoundland Daylight Time
GMT -2:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

6:00 am06:00 MDT (UTC-6), Oct 4, 2026 = 9:30 am09:30 NDT (UTC-2:30), Oct 4, 2026

MDT is 3 hours and 30 minutes behind NDT.

MST and NDT examples

These examples always use MST (UTC-7) and NDT (UTC-2:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

MST is 4 hours and 30 minutes behind NDT.

How the time difference changes

For most of the year, MDT is 3 hours and 30 minutes behind NDT. At other times of the year, MST is 3 hours and 30 minutes behind NST. Briefly around clock changes, MDT is 2 hours and 30 minutes behind NST or MST is 4 hours and 30 minutes behind NDT.

For most of the year, working hours of 9:00 am to 5:00 pm in MDT correspond to 12:30 pm to 8:30 pm in NDT. At other times of the year, working hours of 9:00 am to 5:00 pm in MST correspond to 12:30 pm to 8:30 pm in NST.For most of the year, working hours of 09:00 to 17:00 in MDT correspond to 12:30 to 20:30 in NDT. At other times of the year, working hours of 09:00 to 17:00 in MST correspond to 12:30 to 20:30 in NST.

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

Time Difference

Mountain Daylight Time is 3 hours and 30 minutes behind Newfoundland Daylight Time.
6:00 am06:00 in MDT is 9:30 am09:30 in NDT

MDT to NDT call time
Best time for a conference call or a meeting is between 9am-1:30pm09:00-13:30 in MDT which corresponds to 12:30pm-5pm12:30-17:00 in NDT

6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
9:30 am09:30 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours

6:00 am06:00 MDT / 9:30 am09:30 NDT

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

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 1.65 million people. Other major cities in this time zone include Calgary, Edmonton, Hermosillo, Culiacan.

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 forward for one hourEnd: Mountain Standard Time (MST) 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: Mountain Standard Time (MST) 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.

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

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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT