MDT/MST
Mountain Daylight Time
GMT -6
MST automatically adjusted to MDT time zone, that is in use
PHT
Philippine Time
GMT +8
IST
India Standard Time
GMT +5:30

Time Difference

Mountain Daylight Time is 14 hours behind Philippine Time and 11 hours and 30 minutes behind India Standard Time
10:00 am10:00 in MDT is 12:00 am00:00 in PHT and is 9:30 pm21:30 in IST

MST to PHT call time
Best time for a conference call or a meeting is between 5:30am-7:30am in MST which corresponds to 8:30pm-10:30pm in PHT
MST to IST call time
Best time for a conference call or a meeting is between 6:30am-8:30am in MST which corresponds to 7pm-9pm in IST

10:00 am10:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
12:00 am00:00 Philippine Time (PHT). Offset UTC +8:00 hours
9:30 pm21:30 India Standard Time (IST). Offset UTC +5:30 hours

10:00 am10:00 MDT / 12:00 am00:00 PHT / 9:30 pm21:30 IST

MDT PHT IST
12am (midnight) 2pm 11:30 am
1am 3pm 12:30 pm
2am 4pm 1:30 pm
3am 5pm 2:30 pm
4am 6pm 3:30 pm
5am 7pm 4:30 pm
6am 8pm 5:30 pm
7am 9pm 6:30 pm
8am 10pm 7:30 pm
9am 11pm 8:30 pm
10am 12am (midnight) 9:30 pm
11am 1am 10:30 pm
12pm (noon) 2am 11:30 pm
1pm 3am 12:30 am
2pm 4am 1:30 am
3pm 5am 2:30 am
4pm 6am 3:30 am
5pm 7am 4:30 am
6pm 8am 5:30 am
7pm 9am 6:30 am
8pm 10am 7:30 am
9pm 11am 8:30 am
10pm 12pm (noon) 9:30 am
11pm 1pm 10:30 am
0:00 14:00 11:30
1:00 15:00 12:30
2:00 16:00 13:30
3:00 17:00 14:30
4:00 18:00 15:30
5:00 19:00 16:30
6:00 20:00 17:30
7:00 21:00 18:30
8:00 22:00 19:30
9:00 23:00 20:30
10:00 0:00 21:30
11:00 1:00 22:30
12:00 2:00 23:30
13:00 3:00 0:30
14:00 4:00 1:30
15:00 5:00 2:30
16:00 6:00 3:30
17:00 7:00 4:30
18:00 8:00 5:30
19:00 9:00 6:30
20:00 10:00 7:30
21:00 11:00 8:30
22:00 12:00 9:30
23:00 13:00 10:30

Mountain Standard Time

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

Countries: It is used in following countries: Canada, Mexico, United States

Principal Cities: The largest city in the MST timezone is Phoenix from USA with population about 1.446 million people. Other major cities in the area are 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, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Mountain Daylight Time (MDT).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Mountain Standard Time (MST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.

Daylight saving time clock moves back for one hour from 2am to 1amStart: Mountain Standard Time (MST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.

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 seven hour and zero minutes time differences 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
MST Abbreviation: Several time zones share MST abbreviation and it could refer to these time zones
  • Mountain Standard Time - UTC -7
  • Mauritius Standard Time - UTC +4
  • Moscow Standard Time - UTC +3
  • Magadan Standard Time - UTC +11
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

Philippine Time

Offset: PHT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

PHT Time Zone Geo Map
PHT timezone map

PHT 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 eight hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for PHT
  • H - short form of 'Hotel'
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: India

Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai

Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, India Standard Time remains the same

IST Time Zone Geo Map
IST timezone map

IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
  • India Standard Time - UTC +5:30
  • Irish Standard Time - UTC +1
  • Israel Standard Time - UTC +2