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U to MDT Converter

Updating current time…
U
Uniform Time Zone
GMT -8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MDT
Mountain Daylight Time
GMT -6
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

4:00 am04:00 U (UTC-8), Oct 5, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 5, 2026

U is 2 hours behind MDT.

U and MDT examples

These examples always use U (UTC-8) and MDT (UTC-6). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

U is 2 hours behind MDT.

How the time difference changes

For most of the year, U is 2 hours behind MDT. At other times of the year, U is 1 hour behind MST.

For most of the year, working hours of 9:00 am to 5:00 pm in U correspond to 11:00 am to 7:00 pm in MDT. At other times of the year, working hours of 9:00 am to 5:00 pm in U correspond to 10:00 am to 6:00 pm in MST.For most of the year, working hours of 09:00 to 17:00 in U correspond to 11:00 to 19:00 in MDT. At other times of the year, working hours of 09:00 to 17:00 in U correspond to 10:00 to 18:00 in MST.

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

Time Difference

Uniform Time Zone is 2 hours behind Mountain Daylight Time.
4:00 am04:00 in U is 6:00 am06:00 in MDT

U to MDT call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in U which corresponds to 11am-5pm11:00-17:00 in MDT

4:00 am04:00 Uniform Time Zone (U). Offset UTC -8:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours

4:00 am04:00 U / 6:00 am06:00 MDT

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

Uniform Time Zone

Offset: U is 8 hours behind Greenwich Mean Time (GMT) and is used in Military

Daylight Saving: Clocks in Uniform Time Zone (U) do not change for daylight saving time, so U stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

U representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for U
  • U - short form of 'Uniform'
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone

Mountain Daylight Time

Offset: MDT is 6 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 MDT time zone is Calgary in Canada, with about 1.307 million people. Other major cities in this time zone include Edmonton, Denver, El Paso, Albuquerque.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

MDT Time Zone Geo Map
MDT timezone map

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

Daylight saving time clock moves forward for one hourStart: Mountain Daylight Time (MDT) 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: Mountain Daylight Time (MDT) 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.

MDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for MDT
  • S - short form of 'Sierra'
IANA/Olson: Reflects MDT 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/Denver
  • America/Edmonton
  • America/Inuvik
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST7MDT
  • Navajo
  • US/Mountain
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT