MST
Mountain Standard Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ICT
Indochina Time
GMT +7
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

MST is 14 hours behind ICT. MST uses GMT -7, and ICT uses GMT +7 for this comparison.

For example, 5:00 am MST is 7:00 pm ICT. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 5:30pm-6:30pm MST, which is 7:30am-8:30am ICT (next day).

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

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

Time Difference

Mountain Standard Time is 14 hours behind Indochina Time
5:00 am05:00 in MST is 7:00 pm19:00 in ICT

MST to ICT call time
Best time for a conference call or a meeting is between 5:30pm-6:30pm in MST which corresponds to 7:30am-8:30am in ICT (next day)

5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
7:00 pm19:00 Indochina Time (ICT). Offset UTC +7:00 hours

5:00 am05:00 MST / 7:00 pm19:00 ICT

MSTICT
12am (midnight)2pm
1am3pm
2am4pm
3am5pm
4am6pm
5am7pm
6am8pm
7am9pm
8am10pm
9am11pm
10am12am (midnight)
11am1am
12pm (noon)2am
1pm3am
2pm4am
3pm5am
4pm6am
5pm7am
6pm8am
7pm9am
8pm10am
9pm11am
10pm12pm (noon)
11pm1pm
00:0014:00
01:0015:00
02:0016:00
03:0017:00
04:0018:00
05:0019:00
06:0020:00
07:0021:00
08:0022:00
09:0023:00
10:0000:00
11:0001:00
12:0002:00
13:0003:00
14:0004:00
15:0005:00
16:0006:00
17:0007:00
18:0008:00
19:0009:00
20:0010:00
21:0011:00
22:0012:00
23:0013:00

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 PacĂ­fico

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

Indochina Time

Offset: ICT is 7 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Thailand

Principal Cities: The largest city in the ICT time zone is Bangkok in Thailand, with about 5.104 million people. Other major cities in this time zone include Samut Prakan, Mueang Nonthaburi, Udon Thani, Chon Buri.

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

ICT Time Zone Geo Map
ICT timezone map

ICT 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Golf - Military abbreviation for ICT
  • G - short form of 'Golf'
Time zones with the GMT +7 offset:
  • CXT - Christmas Island Time
  • DAVT - Davis Time
  • G - Golf Time Zone
  • HOVT - Hovd Time
  • ICT - Indochina Time
  • KRAT - Krasnoyarsk Time
  • NOVST - Novosibirsk Summer Time
  • NOVT - Novosibirsk Time
  • OMSST - Omsk Summer Time
  • WIB - Western Indonesian Time