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PDT/PST
Pacific Daylight Time
GMT -7
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 1.
MDT/MST
Mountain Daylight Time
GMT -6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Mountain Time is on daylight saving time: MDT (UTC−6) until Sun, Nov 1.

Arizona stays on MST (UTC−7).

CDT/CST
Central Daylight Time
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Central Time is on daylight saving time: CDT (UTC−5) until Sun, Nov 1.

Mexico City and Saskatchewan stay on CST (UTC−6).

EDT/EST
Eastern Daylight Time
GMT -4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Time is on daylight saving time: EDT (UTC−4) until Sun, Nov 1.
GMT
Greenwich Mean Time
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.

Iceland and Ghana stay on GMT (UTC+0).

UTC
Universal Time Coordinated
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CEST/CET
Central European Summer Time
GMT +2
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Central Europe is on summer time: CEST (UTC+2) until Sun, Oct 25.
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

5:00 am05:00 PDT (UTC-7), Oct 5, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 5, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 5, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 5, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 5, 2026 = 12:00 pm12:00 UTC (UTC+0), Oct 5, 2026 = 2:00 pm14:00 CEST (UTC+2), Oct 5, 2026 = 5:30 pm17:30 IST (UTC+5:30), Oct 5, 2026

PDT is 1 hour behind MDT. PDT is 2 hours behind CDT. PDT is 3 hours behind EDT. PDT is 7 hours behind GMT. PDT is 7 hours behind UTC. PDT is 9 hours behind CEST. PDT is 12 hours and 30 minutes behind IST.

How the time difference changes

PST to MST

For most of the year, PDT is 1 hour behind MDT. At other times of the year, PST is 1 hour behind MST. Briefly around clock changes, PDT and MST have the same time or PST is 2 hours behind MDT.

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

PST to CST

For most of the year, PDT is 2 hours behind CDT. At other times of the year, PST is 2 hours behind CST. Briefly around clock changes, PDT is 1 hour behind CST or PST is 3 hours behind CDT.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 11:00 am to 7:00 pm in CDT. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 11:00 am to 7:00 pm in CST.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 11:00 to 19:00 in CDT. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 11:00 to 19:00 in CST.

PST to EST

For most of the year, PDT is 3 hours behind EDT. At other times of the year, PST is 3 hours behind EST. Briefly around clock changes, PDT is 2 hours behind EST or PST is 4 hours behind EDT.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 12:00 pm to 8:00 pm in EDT. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 12:00 pm to 8:00 pm in EST.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 12:00 to 20:00 in EDT. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 12:00 to 20:00 in EST.

PST to GMT

For most of the year, PDT is 7 hours behind GMT. At other times of the year, PST is 8 hours behind GMT.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 4:00 pm to 12:00 am (next day) in GMT. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 5:00 pm to 1:00 am (next day) in GMT.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 16:00 to 00:00 (next day) in GMT. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 17:00 to 01:00 (next day) in GMT.

PST to UTC

For most of the year, PDT is 7 hours behind UTC. At other times of the year, PST is 8 hours behind UTC.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 4:00 pm to 12:00 am (next day) in UTC. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 5:00 pm to 1:00 am (next day) in UTC.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 16:00 to 00:00 (next day) in UTC. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 17:00 to 01:00 (next day) in UTC.

PST to CET

For most of the year, PDT is 9 hours behind CEST. At other times of the year, PST is 9 hours behind CET or PDT is 8 hours behind CET.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 6:00 pm to 2:00 am (next day) in CEST. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 6:00 pm to 2:00 am (next day) in CET or working hours of 9:00 am to 5:00 pm in PDT correspond to 5:00 pm to 1:00 am (next day) in CET.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 18:00 to 02:00 (next day) in CEST. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 18:00 to 02:00 (next day) in CET or working hours of 09:00 to 17:00 in PDT correspond to 17:00 to 01:00 (next day) in CET.

PST to IST

For most of the year, PDT is 12 hours and 30 minutes behind IST. At other times of the year, PST is 13 hours and 30 minutes behind IST.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 9:30 pm to 5:30 am (next day) in IST. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 10:30 pm to 6:30 am (next day) in IST.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 21:30 to 05:30 (next day) in IST. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 22:30 to 06:30 (next day) in IST.

Compare PST time with MST, CST, EST, GMT, UTC, CET, and IST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Pacific Daylight Time is 1 hour behind Mountain Daylight Time. Pacific Daylight Time is 2 hours behind Central Daylight Time. Pacific Daylight Time is 3 hours behind Eastern Daylight Time. Pacific Daylight Time is 7 hours behind Greenwich Mean Time. Pacific Daylight Time is 7 hours behind Universal Time Coordinated. Pacific Daylight Time is 9 hours behind Central European Summer Time. Pacific Daylight Time is 12 hours and 30 minutes behind India Standard Time.
5:00 am05:00 in PDT is 6:00 am06:00 in MDT and is 7:00 am07:00 in CDT and is 8:00 am08:00 in EDT and is 12:00 pm12:00 in GMT and is 12:00 pm12:00 in UTC and is 2:00 pm14:00 in CEST and is 5:30 pm17:30 in IST

PDT to MDT call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in PDT which corresponds to 10am-5pm10:00-17:00 in MDT
PDT to CDT call time
Best time for a conference call or a meeting is between 9am-3pm09:00-15:00 in PDT which corresponds to 11am-5pm11:00-17:00 in CDT
PDT to EDT call time
Best time for a conference call or a meeting is between 9am-2pm09:00-14:00 in PDT which corresponds to 12pm-5pm12:00-17:00 in EDT
PDT to GMT call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in PDT which corresponds to 4pm-5pm16:00-17:00 in GMT
PDT to UTC call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in PDT which corresponds to 4pm-5pm16:00-17:00 in UTC
PDT to CEST call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in PDT which corresponds to 5pm-6pm17:00-18:00 in CEST
PDT to IST call time
Best time for a conference call or a meeting is between 6:30pm-7:30pm18:30-19:30 in PDT which corresponds to 7am-8am07:00-08:00 in IST (next day)

5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:00 pm12:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
2:00 pm14:00 Central European Summer Time (CEST). Offset UTC +2:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours

5:00 am05:00 PDT / 6:00 am06:00 MDT / 7:00 am07:00 CDT / 8:00 am08:00 EDT / 12:00 pm12:00 GMT / 12:00 pm12:00 UTC / 2:00 pm14:00 CEST / 5:30 pm17:30 IST

PDTMDTCDTEDTGMTUTCCESTIST
12:00am1:00am2:00am3:00am7:00am7:00am9:00am12:30pm
1:00am2:00am3:00am4:00am8:00am8:00am10:00am1:30pm
2:00am3:00am4:00am5:00am9:00am9:00am11:00am2:30pm
3:00am4:00am5:00am6:00am10:00am10:00am12:00pm3:30pm
4:00am5:00am6:00am7:00am11:00am11:00am1:00pm4:30pm
5:00am6:00am7:00am8:00am12:00pm12:00pm2:00pm5:30pm
6:00am7:00am8:00am9:00am1:00pm1:00pm3:00pm6:30pm
7:00am8:00am9:00am10:00am2:00pm2:00pm4:00pm7:30pm
8:00am9:00am10:00am11:00am3:00pm3:00pm5:00pm8:30pm
9:00am10:00am11:00am12:00pm4:00pm4:00pm6:00pm9:30pm
10:00am11:00am12:00pm1:00pm5:00pm5:00pm7:00pm10:30pm
11:00am12:00pm1:00pm2:00pm6:00pm6:00pm8:00pm11:30pm
12:00pm1:00pm2:00pm3:00pm7:00pm7:00pm9:00pm12:30am
1:00pm2:00pm3:00pm4:00pm8:00pm8:00pm10:00pm1:30am
2:00pm3:00pm4:00pm5:00pm9:00pm9:00pm11:00pm2:30am
3:00pm4:00pm5:00pm6:00pm10:00pm10:00pm12:00am3:30am
4:00pm5:00pm6:00pm7:00pm11:00pm11:00pm1:00am4:30am
5:00pm6:00pm7:00pm8:00pm12:00am12:00am2:00am5:30am
6:00pm7:00pm8:00pm9:00pm1:00am1:00am3:00am6:30am
7:00pm8:00pm9:00pm10:00pm2:00am2:00am4:00am7:30am
8:00pm9:00pm10:00pm11:00pm3:00am3:00am5:00am8:30am
9:00pm10:00pm11:00pm12:00am4:00am4:00am6:00am9:30am
10:00pm11:00pm12:00am1:00am5:00am5:00am7:00am10:30am
11:00pm12:00am1:00am2:00am6:00am6:00am8:00am11:30am
00:0001:0002:0003:0007:0007:0009:0012:30
01:0002:0003:0004:0008:0008:0010:0013:30
02:0003:0004:0005:0009:0009:0011:0014:30
03:0004:0005:0006:0010:0010:0012:0015:30
04:0005:0006:0007:0011:0011:0013:0016:30
05:0006:0007:0008:0012:0012:0014:0017:30
06:0007:0008:0009:0013:0013:0015:0018:30
07:0008:0009:0010:0014:0014:0016:0019:30
08:0009:0010:0011:0015:0015:0017:0020:30
09:0010:0011:0012:0016:0016:0018:0021:30
10:0011:0012:0013:0017:0017:0019:0022:30
11:0012:0013:0014:0018:0018:0020:0023:30
12:0013:0014:0015:0019:0019:0021:0000:30
13:0014:0015:0016:0020:0020:0022:0001:30
14:0015:0016:0017:0021:0021:0023:0002:30
15:0016:0017:0018:0022:0022:0000:0003:30
16:0017:0018:0019:0023:0023:0001:0004:30
17:0018:0019:0020:0000:0000:0002:0005:30
18:0019:0020:0021:0001:0001:0003:0006:30
19:0020:0021:0022:0002:0002:0004:0007:30
20:0021:0022:0023:0003:0003:0005:0008:30
21:0022:0023:0000:0004:0004:0006:0009:30
22:0023:0000:0001:0005:0005:0007:0010:30
23:0000:0001:0002:0006:0006:0008:0011:30

Pacific Standard Time

Offset: PST is 8 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 PST 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: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

PST Time Zone Geo Map
PST 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 Pacific Daylight Time (PDT).

Daylight saving time clock moves forward for one hourEnd: Pacific Standard Time (PST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hourStart: Pacific Standard Time (PST) starts 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. Standard time starts annually on the first Sunday of November.

See upcoming clock changes worldwide.

PST 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 PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST 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
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
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 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 1.65 million people. Other major cities in this time zone include Calgary, Edmonton, Hermosillo, Culiacan.

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 forward for one hourEnd: Mountain Standard Time (MST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hourStart: Mountain Standard Time (MST) starts 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. Standard time starts annually on the first Sunday of November.

See 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

Central Standard Time

Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States

Principal Cities: The largest city in the CST time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Iztapalapa, Ecatepec.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

CST Time Zone Geo Map
CST 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 Central Daylight Time (CDT).

Daylight saving time clock moves forward for one hourEnd: Central Standard Time (CST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hourStart: Central Standard Time (CST) starts 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. Standard time starts annually on the first Sunday of November.

See upcoming clock changes worldwide.

CST 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 CST
  • S - short form of 'Sierra'
IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Bahia_Banderas
  • America/Belize
  • America/Chicago
  • America/Chihuahua
  • America/Costa_Rica
  • America/El_Salvador
  • America/Guatemala
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Managua
  • America/Matamoros
  • America/Menominee
  • America/Merida
  • America/Mexico_City
  • America/Monterrey
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Regina
  • America/Resolute
  • America/Swift_Current
  • America/Tegucigalpa
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • Canada/Saskatchewan
  • Mexico/General
  • US/Central
  • US/Indiana-Starke
CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones
  • Central Standard Time - UTC -6
  • China Standard Time - UTC +8
  • Cuba Standard Time - UTC -5
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

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, 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, Brooklyn, Borough of Queens, Montreal.

French: HNE - Heure Normale de l'Est

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

EST Time Zone Geo Map
EST 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 Eastern Daylight Time (EDT).

Daylight saving time clock moves forward for one hourEnd: Eastern Standard Time (EST) ended 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 local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hourStart: Eastern Standard Time (EST) starts 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. Standard time starts annually on the first Sunday of November.

See 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

Greenwich Mean Time

Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

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

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

GMT Time Zone Geo Map
GMT timezone map

GMT 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 GMT
  • Z - short form of 'Zulu'
IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland
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 - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Universal Time Coordinated

Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal

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

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 - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Central European Time

Offset: CET is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Algeria, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Tunisia, Vatican City

Principal Cities: The largest city in the CET time zone is Berlin in Germany, with about 3.426 million people. Other major cities in this time zone include Madrid, Algiers, Rome, Paris.

German: MEZ - Mitteleuropäische Zeit

CET Time Zone Geo Map
CET 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 Central European Summer Time (CEST).

Daylight saving time clock moves forward for one hourEnd: Central European Time (CET) ended on Sunday, March 29, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the last Sunday of March.

Daylight saving time clock moves back for one hourStart: Central European Time (CET) starts on Sunday, October 25, 2026 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 2:00 am02:00. Standard time starts annually on the last Sunday of October.

See upcoming clock changes worldwide.

CET representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for CET
  • A - short form of 'Alpha'
IANA/Olson: Reflects CET time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Algiers
  • Africa/Ceuta
  • Africa/Tunis
  • Arctic/Longyearbyen
  • Atlantic/Jan_Mayen
  • CET
  • Europe/Amsterdam
  • Europe/Andorra
  • Europe/Belgrade
  • Europe/Berlin
  • Europe/Bratislava
  • Europe/Brussels
  • Europe/Budapest
  • Europe/Busingen
  • Europe/Copenhagen
  • Europe/Gibraltar
  • Europe/Ljubljana
  • Europe/Luxembourg
  • Europe/Madrid
  • Europe/Malta
  • Europe/Monaco
  • Europe/Oslo
  • Europe/Paris
  • Europe/Podgorica
  • Europe/Prague
  • Europe/Rome
  • Europe/San_Marino
  • Europe/Sarajevo
  • Europe/Skopje
  • Europe/Stockholm
  • Europe/Tirane
  • Europe/Vaduz
  • Europe/Vatican
  • Europe/Vienna
  • Europe/Warsaw
  • Europe/Zagreb
  • Europe/Zurich
  • MET
  • Poland
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

India Standard Time

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

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, Bangalore, Chennai, Kolkata.

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.

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 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