France
CET
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EST
Eastern Standard Time
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
California, USA
PST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CST
Central Standard Time
GMT -6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
SAST
South Africa Standard Time
GMT +2
12am
3am
6am
9am
12pm
3pm
6pm
9pm
WAT
West Africa Time
GMT +1
12am
3am
6am
9am
12pm
3pm
6pm
9pm
GMT
Greenwich Mean Time
GMT +0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IST
India Standard Time
GMT +5:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare Paris time with EST, Los Angeles, CST, SAST, WAT, GMT, and IST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

CET (Central European Time) is 6 hours ahead of Eastern Standard Time and 9 hours ahead of PST (Pacific Standard Time) and 7 hours ahead of Central Standard Time and 1 hour behind South Africa Standard Time and 0 hours ahead of West Africa Time and 1 hour ahead of Greenwich Mean Time and 4 hours and 30 minutes behind India Standard Time
1:00 pm13:00 in Paris, France is 7:00 am07:00 in EST and is 4:00 am04:00 in Los Angeles, CA, USA and is 6:00 am06:00 in CST and is 2:00 pm14:00 in SAST and is 1:00 pm13:00 in WAT and is 12:00 pm12:00 in GMT and is 5:30 pm17:30 in IST

Paris to EST call time
Best time for a conference call or a meeting is between 3pm-5pm in Paris which corresponds to 9am-11am in EST
Paris to Los Angeles call time
Best time for a conference call or a meeting is between 5pm-6pm in Paris which corresponds to 8am-9am in Los Angeles
Paris to CST call time
Best time for a conference call or a meeting is between 4pm-5pm in Paris which corresponds to 9am-10am in CST
Paris to SAST call time
Best time for a conference call or a meeting is between 9am-4pm in Paris which corresponds to 10am-5pm in SAST
Paris to WAT call time
Best time for a conference call or a meeting is between 9am-5pm in Paris which corresponds to 9am-5pm in WAT
Paris to GMT call time
Best time for a conference call or a meeting is between 10am-5pm in Paris which corresponds to 9am-4pm in GMT
Paris to IST call time
Best time for a conference call or a meeting is between 9am-12:30pm in Paris which corresponds to 1:30pm-5pm in IST

1:00 pm13:00 CET (Central European Time) (Paris, France). Offset UTC +1:00 hour
7:00 am07:00 Eastern Standard Time (EST). Offset UTC -5:00 hours
4:00 am04:00 PST (Pacific Standard Time) (Los Angeles, CA, USA). Offset UTC -8:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
2:00 pm14:00 South Africa Standard Time (SAST). Offset UTC +2:00 hours
1:00 pm13:00 West Africa Time (WAT). Offset UTC +1:00 hour
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours

1:00 pm13:00 Paris, France / 7:00 am07:00 EST / 4:00 am04:00 Los Angeles, CA, USA / 6:00 am06:00 CST / 2:00 pm14:00 SAST / 1:00 pm13:00 WAT / 12:00 pm12:00 GMT / 5:30 pm17:30 IST

Paris, FranceESTLos Angeles, CA, USACSTSASTWATGMTIST
12am (midnight)6pm3pm5pm1am12am (midnight)11pm4:30 am
1am7pm4pm6pm2am1am12am (midnight)5:30 am
2am8pm5pm7pm3am2am1am6:30 am
3am9pm6pm8pm4am3am2am7:30 am
4am10pm7pm9pm5am4am3am8:30 am
5am11pm8pm10pm6am5am4am9:30 am
6am12am (midnight)9pm11pm7am6am5am10:30 am
7am1am10pm12am (midnight)8am7am6am11:30 am
8am2am11pm1am9am8am7am12:30 pm
9am3am12am (midnight)2am10am9am8am1:30 pm
10am4am1am3am11am10am9am2:30 pm
11am5am2am4am12pm (noon)11am10am3:30 pm
12pm (noon)6am3am5am1pm12pm (noon)11am4:30 pm
1pm7am4am6am2pm1pm12pm (noon)5:30 pm
2pm8am5am7am3pm2pm1pm6:30 pm
3pm9am6am8am4pm3pm2pm7:30 pm
4pm10am7am9am5pm4pm3pm8:30 pm
5pm11am8am10am6pm5pm4pm9:30 pm
6pm12pm (noon)9am11am7pm6pm5pm10:30 pm
7pm1pm10am12pm (noon)8pm7pm6pm11:30 pm
8pm2pm11am1pm9pm8pm7pm12:30 am
9pm3pm12pm (noon)2pm10pm9pm8pm1:30 am
10pm4pm1pm3pm11pm10pm9pm2:30 am
11pm5pm2pm4pm12am (midnight)11pm10pm3:30 am
00:0018:0015:0017:0001:0000:0023:0004:30
01:0019:0016:0018:0002:0001:0000:0005:30
02:0020:0017:0019:0003:0002:0001:0006:30
03:0021:0018:0020:0004:0003:0002:0007:30
04:0022:0019:0021:0005:0004:0003:0008:30
05:0023:0020:0022:0006:0005:0004:0009:30
06:0000:0021:0023:0007:0006:0005:0010:30
07:0001:0022:0000:0008:0007:0006:0011:30
08:0002:0023:0001:0009:0008:0007:0012:30
09:0003:0000:0002:0010:0009:0008:0013:30
10:0004:0001:0003:0011:0010:0009:0014:30
11:0005:0002:0004:0012:0011:0010:0015:30
12:0006:0003:0005:0013:0012:0011:0016:30
13:0007:0004:0006:0014:0013:0012:0017:30
14:0008:0005:0007:0015:0014:0013:0018:30
15:0009:0006:0008:0016:0015:0014:0019:30
16:0010:0007:0009:0017:0016:0015:0020:30
17:0011:0008:0010:0018:0017:0016:0021:30
18:0012:0009:0011:0019:0018:0017:0022:30
19:0013:0010:0012:0020:0019:0018:0023:30
20:0014:0011:0013:0021:0020:0019:0000:30
21:0015:0012:0014:0022:0021:0020:0001:30
22:0016:0013:0015:0023:0022:0021:0002:30
23:0017:0014:0016:0000:0023:0022:0003:30

Paris Information

Time Zone

Abbreviation / Name
CEST - Central European Summer Time
CET - Central European Standard Time
UTC / GMT Offset
+2:00 hours during Central European Summer Time, currently in use.
+1:00 hours during Central European Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 29, 2026 at 2:00 am local time. DST starts annually on the last Sunday of March. Clocks are turned forward 1 hour to Sunday, March 29, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 3am to 2amSunday, October 25, 2026 at 3:00 am local time. DST ends annually on the last Sunday of October. Clocks are turned backward 1 hour to Sunday, October 25, 2026 at 2:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Paris Facts

Country
France
Alternative Names
Baariis, Bahliz, Ile-de-France, Lungsod ng Paris, Lutece, Lutetia, Lutetia Parisorum, Lutèce, PAR, Pa-ri, Paarys, Palika, Paname, Pantruche, Paraeis, Paras, Pari, Paries, Parigge, Pariggi, Parighji, Parigi, Pariis, Pariisi, Pariizu, Pariižu, Parij, Parijs, Paris, Parisi, Parixe, Pariz, Parize, Parizh, Parizh osh, Parizh', Parizo, Parizs, Pariž, Parys, Paryz, Paryzh, Paryzius, Paryż, Paryžius, Paräis, París, Paríž, Parîs, Parĩ, Parī, Parīze, Paříž, Páras, Párizs, Ville-Lumiere, Ville-Lumière, ba li, barys, pairisa, pali, pari, paris, parys, paryzh, perisa, pryz, pyaris, pyarisa, pyrs, Île-de-France, Παρίσι, Париж, Париж ош, Парижь, Париз, Парис, Парыж, Паріж, Փարիզ, פאריז, פריז, باريس, پارىژ, پاريس, پاریس, پیرس, ܦܐܪܝܣ, पॅरिस, पेरिस, पैरिस, প্যারিস, ਪੈਰਿਸ, પૅરિસ, பாரிஸ், పారిస్, ಪ್ಯಾರಿಸ್, പാരിസ്, ปารีส, ཕ་རི།, ပါရီမြို့, პარიზი, ፓሪስ, ប៉ារីស, パリ, 巴黎, 파리
Population
2,138,551
Currency
Euro (EUR)
Geographic Coordinates
48° 51' N Latitude / 2° 20' E Longitude
International Dialing Code
+33

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 8.175 million people. Other major cities in this time zone include Toronto, Montreal, Brooklyn, Borough of Queens.

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 back for one hour from 2am to 1amStart: Eastern Standard Time (EST) 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: Eastern Standard Time (EST) 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.

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

Los Angeles Information

Time Zone

Abbreviation / Name
PDT - Pacific Daylight Time
PST - Pacific Standard Time
UTC / GMT Offset
-7:00 hours during Pacific Daylight Time, currently in use.
-8:00 hours during Pacific Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1amSunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Los Angeles Facts

Country
USA
State
California
Alternative Names
Angelopolis, Ciudad De los Angelos, Cuidad De Los Angelos, El Pueblo de Nuestra Senora La Reina de Los Angeles de Porcivncula, El Pueblo de Nuestra Senora de los Angeles de Porciuncula, El Pueblo de Nuestra Señora de los Ángeles de Porciúncula, El Pueblo del Rio de Nuestra Senora, L.A., LA, LAX, La Reina de Los Angeles de Porciuncula, Lok-chham-ki, Los And'eles, Los Andzelas, Los Andzeles, Los Andzheles, Los Andzhelis, Los Andželas, Los Andželes, Los Angeles, Los Anjeles, Los Anjélés, Los Antzeles, Los Anxheles, Los Anxhelos, Los Anzeles, Los Anzheles, Los Ángeles, Los-Anceles, Los-Andzeles, Los-Andzhehles, Los-Andzheles, Los-Angeleso, Los-Anjeles, Los-Anzheles, Los-Anzheles shaary, Los-Anĝeleso, Losandzelosa, Losandželosa, Lo̍k-chhám-kî, Lungsod ng Los Angeles, Luos Andzels, Luos Andžels, Os Anxeles, Os Ánxeles, Pueblo De Los Angeles, Pueblo Los Angelos, el-ei, las aynjls, las encalas, las enjales, las enjalis, lasa ainjalasa, lasa enjalasa, lasa enjilasa, leas anceles, los-anjelesi, losa enjelasa, losa enjelisa, losa enjelsa, loseuaenjelleseu, loseuenjelleseu, ls anjls, luo shan ji, lws anjls, lws anjlws, lws anjlys, lws ʼngls, rosanzerusu, Λος Άντζελες, Лос Анджелес, Лос Анджелис, Лос Андьелес, Лос Анжелес, Лос Анђелес, Лос Анџелес, Лос Анҷелес, Лос Анӂелес, Лос-Анджелес, Лос-Анджэлес, Лос-Анжелес, Лос-Анжелес шаары, Лос-Анџелес, Լոս Անջելես, לאס אנדזשעלעס, לוס אנגלס, لاس اینجلس, لس آنجلس, لس‌آنجلس, لوس آنجلس, لوس أنجلوس, لوس ئانجېلېس, لوس انجليس, لوس‌آنجلس, لۆس ئانجلەس, लस एञ्जिलस, लस एन्जलस, लास एंजलस, लॉस एंजेलिस, लॉस एंजेल्स, লস অ্যাঞ্জেলেস, ਲਾਸ ਐਂਜਲਸ, લોસ એન્જેલસ, லாஸ் ஏஞ்சலஸ், లాస్ ఏంజలెస్, ಲಾಸ್ ಎಂಜಲೀಸ್, ലോസ് ആഞ്ചെലെസ്, ลอสแอนเจลิส, လော့စ်အိန်ဂျယ်လိစ်မြို့, ლოს-ანჯელესი, ሎስ አንጄሌስ, ロサンゼルス, 洛杉矶, 洛杉磯, 로스앤젤레스, 로스엔젤레스, 엘에이
Population
3,971,883
Currency
Dollar (USD)
Geographic Coordinates
34° 03' N Latitude / 118° 14' W Longitude
International Dialing Code
+1

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 back for one hour from 2am to 1amStart: Central Standard Time (CST) 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: Central Standard Time (CST) 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.

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

South Africa Standard Time

Offset: SAST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Africa

Countries using this time zone: Lesotho, Eswatini (Swaziland), South Africa

Principal Cities: The largest city in the SAST time zone is Cape Town in South Africa, with about 3.433 million people. Other major cities in this time zone include Durban, Johannesburg, Soweto, Pretoria.

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

SAST Time Zone Geo Map
SAST timezone map

SAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Bravo - Military abbreviation for SAST
  • B - short form of 'Bravo'
IANA/Olson: Reflects SAST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Johannesburg
  • Africa/Maseru
  • Africa/Mbabane
Time zones with the GMT +2 offset:
  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time

West Africa Time

Offset: WAT is 1 hour ahead Greenwich Mean Time (GMT) and is used in Africa

Countries using this time zone: Angola, Benin, Congo (Dem. Rep.), Central African Rep., Congo (Rep.), Cameroon, Gabon, Equatorial Guinea, Niger, Nigeria, Chad

Principal Cities: The largest city in the WAT time zone is Lagos in Nigeria, with about 9 million people. Other major cities in this time zone include Kinshasa, Kano, Ibadan, Luanda.

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

WAT Time Zone Geo Map
WAT timezone map

WAT 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 WAT
  • A - short form of 'Alpha'
IANA/Olson: Reflects WAT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Bangui
  • Africa/Brazzaville
  • Africa/Douala
  • Africa/Kinshasa
  • Africa/Lagos
  • Africa/Libreville
  • Africa/Luanda
  • Africa/Malabo
  • Africa/Ndjamena
  • Africa/Niamey
  • Africa/Porto-Novo
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

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 7.557 million people. Other major cities in this time zone include Abidjan, Dakar, Grand Dakar, Accra.

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

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, Kolkata, Chennai.

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.

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