Updating current time…
MST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NZDT
UTC+13
tomorrow (next day)
20h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST
UTC−5
2h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
UTC
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST/PDT
UTC−8
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on standard time: PST (UTC−8) until Sun, Mar 14, 2027.
IST
UTC+5:30
12h 30m ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:00 am05:00 MST (UTC-7), Nov 3, 2026 = 1:00 am01:00 NZDT (UTC+13), Nov 4, 2026 = 7:00 am07:00 EST (UTC-5), Nov 3, 2026 = 12:00 pm12:00 UTC (UTC+0), Nov 3, 2026 = 4:00 am04:00 PST (UTC-8), Nov 3, 2026 = 5:30 pm17:30 IST (UTC+5:30), Nov 3, 2026

MST is 20 hours behind NZDT. MST is 2 hours behind EST. MST is 7 hours behind UTC. MST is 1 hour ahead of PST. MST is 12 hours and 30 minutes behind IST.

How the time difference changes

MST to NZDT

Depending on seasonal clock changes, MDT is 18 hours behind NZST, MDT is 19 hours behind NZDT, or MST is 20 hours behind NZDT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in MDT correspond to 3:00 am (next day) to 12:00 pm (next day) in NZST, working hours of 9:00 am to 6:00 pm in MDT correspond to 4:00 am (next day) to 1:00 pm (next day) in NZDT, or working hours of 9:00 am to 6:00 pm in MST correspond to 5:00 am (next day) to 2:00 pm (next day) in NZDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in MDT correspond to 03:00 (next day) to 12:00 (next day) in NZST, working hours of 09:00 to 18:00 in MDT correspond to 04:00 (next day) to 13:00 (next day) in NZDT, or working hours of 09:00 to 18:00 in MST correspond to 05:00 (next day) to 14:00 (next day) in NZDT.

MST to EST

For most of the year, MDT is 2 hours behind EDT. From Nov 1, 2026 to Mar 14, 2027, MST is 2 hours behind EST. Briefly around clock changes, MDT is 1 hour behind EST or MST is 3 hours behind EDT.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 11:00 am to 8:00 pm in EDT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 11:00 am to 8:00 pm in EST.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 11:00 to 20:00 in EDT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 11:00 to 20:00 in EST.

MST to UTC

For most of the year, MDT is 6 hours behind UTC. From Nov 1, 2026 to Mar 14, 2027, MST is 7 hours behind UTC.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 3:00 pm to 12:00 am (next day) in UTC. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 4:00 pm to 1:00 am (next day) in UTC.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 15:00 to 00:00 (next day) in UTC. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 16:00 to 01:00 (next day) in UTC.

MST to PDT

For most of the year, MDT is 1 hour ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, MST is 1 hour ahead of PST. Briefly around clock changes, MDT is 2 hours ahead of PST or MST and PDT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 8:00 am to 5:00 pm in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 8:00 am to 5:00 pm in PST.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 08:00 to 17:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 08:00 to 17:00 in PST.

MST to IST

For most of the year, MDT is 11 hours and 30 minutes behind IST. From Nov 1, 2026 to Mar 14, 2027, MST is 12 hours and 30 minutes behind IST.

For most of the year, working hours of 9:00 am to 6:00 pm in MDT correspond to 8:30 pm to 5:30 am (next day) in IST. At other times of the year, working hours of 9:00 am to 6:00 pm in MST correspond to 9:30 pm to 6:30 am (next day) in IST.For most of the year, working hours of 09:00 to 18:00 in MDT correspond to 20:30 to 05:30 (next day) in IST. At other times of the year, working hours of 09:00 to 18:00 in MST correspond to 21:30 to 06:30 (next day) in IST.

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

Time Difference

Mountain Standard Time is 20 hours behind New Zealand Daylight Time. Mountain Standard Time is 2 hours behind Eastern Standard Time. Mountain Standard Time is 7 hours behind Coordinated Universal Time. Mountain Standard Time is 1 hour ahead of Pacific Standard Time. Mountain Standard Time is 12 hours and 30 minutes behind India Standard Time.
5:00 am05:00 in MST is 1:00 am01:00 in NZDT and is 7:00 am07:00 in EST and is 12:00 pm12:00 in UTC and is 4:00 am04:00 in PST and is 5:30 pm17:30 in IST

MST to NZDT call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in MST which corresponds to 9am-2pm09:00-14:00 in NZDT (next day)
MST to EST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in MST which corresponds to 11am-6pm11:00-18:00 in EST
MST to UTC call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in MST which corresponds to 4pm-6pm16:00-18:00 in UTC
MST to PST call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in MST which corresponds to 9am-5pm09:00-17:00 in PST
MST to IST call time
Best time for a conference call or a meeting is between 7pm-8pm19:00-20:00 in MST which corresponds to 7:30am-8:30am07:30-08:30 in IST (next day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.

5:00 am05:00 Mountain Standard Time (MST). Offset UTC -7:00 hours
1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
12:00 pm12:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours
4:00 am04:00 Pacific Standard Time (PST). Offset UTC -8:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours

5:00 am05:00 MST / 1:00 am01:00 NZDT / 7:00 am07:00 EST / 12:00 pm12:00 UTC / 4:00 am04:00 PST / 5:30 pm17:30 IST

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
MSTNZDTESTUTCPSTIST
8:00pm2:00am7:00am11:00pm previous day12:30pm
9:00pm3:00am8:00am12:00am1:30pm
10:00pm4:00am9:00am1:00am2:30pm
11:00pm5:00am10:00am2:00am3:30pm
12:00am next day6:00am11:00am3:00am4:30pm
1:00am next day7:00am12:00pm4:00am5:30pm
2:00am next day8:00am1:00pm5:00am6:30pm
3:00am next day9:00am2:00pm6:00am7:30pm
4:00am next day10:00am3:00pm7:00am8:30pm
5:00am next day11:00am4:00pm8:00am9:30pm
6:00am next day12:00pm5:00pm9:00am10:30pm
7:00am next day1:00pm6:00pm10:00am11:30pm
8:00am next day2:00pm7:00pm11:00am12:30am next day
9:00am next day3:00pm8:00pm12:00pm1:30am next day
10:00am next day4:00pm9:00pm1:00pm2:30am next day
11:00am next day5:00pm10:00pm2:00pm3:30am next day
12:00pm next day6:00pm11:00pm3:00pm4:30am next day
1:00pm next day7:00pm12:00am next day4:00pm5:30am next day
2:00pm next day8:00pm1:00am next day5:00pm6:30am next day
3:00pm next day9:00pm2:00am next day6:00pm7:30am next day
4:00pm next day10:00pm3:00am next day7:00pm8:30am next day
5:00pm next day11:00pm4:00am next day8:00pm9:30am next day
6:00pm next day12:00am next day5:00am next day9:00pm10:30am next day
7:00pm next day1:00am next day6:00am next day10:00pm11:30am next day
20:0002:0007:0023:00 previous day12:30
21:0003:0008:0000:0013:30
22:0004:0009:0001:0014:30
23:0005:0010:0002:0015:30
00:00 next day06:0011:0003:0016:30
01:00 next day07:0012:0004:0017:30
02:00 next day08:0013:0005:0018:30
03:00 next day09:0014:0006:0019:30
04:00 next day10:0015:0007:0020:30
05:00 next day11:0016:0008:0021:30
06:00 next day12:0017:0009:0022:30
07:00 next day13:0018:0010:0023:30
08:00 next day14:0019:0011:0000:30 next day
09:00 next day15:0020:0012:0001:30 next day
10:00 next day16:0021:0013:0002:30 next day
11:00 next day17:0022:0014:0003:30 next day
12:00 next day18:0023:0015:0004:30 next day
13:00 next day19:0000:00 next day16:0005:30 next day
14:00 next day20:0001:00 next day17:0006:30 next day
15:00 next day21:0002:00 next day18:0007:30 next day
16:00 next day22:0003:00 next day19:0008:30 next day
17:00 next day23:0004:00 next day20:0009:30 next day
18:00 next day00:00 next day05:00 next day21:0010:30 next day
19:00 next day01:00 next day06:00 next day22:0011:30 next day

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT).

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 Ciudad Juárez, Hermosillo, Culiacán, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Standard Time (MST)
MST all year MST part of the year

Today all shaded areas are on MST.

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).

123456789101112Start: Mountain Standard Time (MST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Mountain Standard Time (MST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and 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

New Zealand Daylight Time

Offset: NZDT is 13 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, New Zealand

Principal Cities: The largest city in the NZDT time zone is Auckland in New Zealand, with about 1.547 million people. Other major cities in this time zone include Christchurch, Wellington, Hamilton, Tauranga.

Map of the areas on New Zealand Daylight Time (NZDT)
NZDT part of the year

Today all shaded areas are on NZDT.

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

123456789101112Start: New Zealand Daylight Time (NZDT) started on Sunday, September 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am03:00. Daylight saving starts annually on the last Sunday of September.

123456789101112End: New Zealand Daylight Time (NZDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See New Zealand daylight saving time and upcoming clock changes worldwide.

NZDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates an offset of thirteen hours to the east of the zero meridian.
IANA/Olson: Reflects NZDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland
Time zones with the GMT +13 offset:
  • FJST - Fiji Summer Time
  • NZDT - New Zealand Daylight Time
  • PHOT - Phoenix Island Time
  • TKT - Tokelau Time
  • TOT - Tonga Time
  • WST - West Samoa Time
  • WSST - West Samoa Standard Time

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

Map of the areas on Eastern Standard Time (EST)
EST all year EST part of the year

Today all shaded areas are on EST.

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Eastern Daylight Time (EDT).

123456789101112Start: Eastern Standard Time (EST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Eastern Standard Time (EST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

EST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

Coordinated Universal Time

Offset: UTC is the same as Greenwich Mean Time (GMT).

Countries using this time zone: Antarctica, Burkina Faso, Faroe Islands, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Portugal, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Spain, Togo, United Kingdom, Western Sahara

Principal Cities: The largest city in the UTC time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is the successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but UTC is the standard the scientific community uses.
UTC has been the time standard commonly used across the world since 1972. It is used in many technical fields, such as aviation and meteorology, and to synchronize time across internet networks.

Map of the areas on Coordinated Universal Time (UTC)
UTC all year UTC part of the year

Today some of the lighter areas are on UTC−1.

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Mexico, United States

Principal Cities: The largest city in the PDT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Map of the areas on Pacific Daylight Time (PDT)
PDT part of the year

Today the shaded areas are on UTC−8 (Pacific Standard Time).

Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Pacific Standard Time (PST).

123456789101112End: Pacific Daylight Time (PDT) ended on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were 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.

123456789101112Start: Pacific Daylight Time (PDT) starts on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

See USA daylight saving time and upcoming clock changes worldwide.

PDT 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 PDT
  • T - short form of 'Tango'
IANA/Olson: Reflects PDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

India Standard Time

Offset: IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT).

Countries using this time zone: India

Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bengaluru, Hyderabad, Ahmedabad.

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

Current time in India: India time now

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 an offset of five hours and thirty minutes 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