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MST to YDT Converter

Updating current time…
MST
Mountain Standard Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm
YDT
Yukon Daylight Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

For most of the year, MDT is 1 hour ahead of YDT. During seasonal clock changes, MST and YDT have the same time.

For most of the year, working hours of 9:00 am to 5:00 pm in MDT correspond to 8:00 am to 4:00 pm in YDT. During seasonal clock changes, working hours of 9:00 am to 5:00 pm in MST correspond to 9:00 am to 5:00 pm in YDT.

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

Best meeting overlap: 9am-5pm MST, which is 9am-5pm YDT.

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

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

Time Difference

Mountain Standard Time is 0 hours ahead of Yukon Daylight Time
5:00 am05:00 in MST is 5:00 am05:00 in YDT

MST to YDT call time
Best time for a conference call or a meeting is between 9am-5pm in MST which corresponds to 9am-5pm in YDT

5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
5:00 am05:00 Yukon Daylight Time (YDT). Offset UTC -7:00 hours

5:00 am05:00 MST / 5:00 am05:00 YDT

MSTYDT
12am (midnight)12am (midnight)
1am1am
2am2am
3am3am
4am4am
5am5am
6am6am
7am7am
8am8am
9am9am
10am10am
11am11am
12pm (noon)12pm (noon)
1pm1pm
2pm2pm
3pm3pm
4pm4pm
5pm5pm
6pm6pm
7pm7pm
8pm8pm
9pm9pm
10pm10pm
11pm11pm
00:0000:00
01:0001:00
02:0002:00
03:0003:00
04:0004:00
05:0005:00
06:0006:00
07:0007:00
08:0008:00
09:0009:00
10:0010:00
11:0011:00
12:0012:00
13:0013:00
14:0014:00
15:0015:00
16:0016:00
17:0017:00
18:0018:00
19:0019:00
20:0020:00
21:0021:00
22:0022:00
23:0023:00

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

Yukon Daylight Time

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

Daylight Saving: Clocks in Yukon Daylight Time (YDT) do not change for daylight saving time, so YDT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

French: HAY - Heure Avancee du Yukon

YDT 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 YDT
  • T - short form of 'Tango'
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