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- CDT to GMT to SGT to IST to GST
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CDT
Central Daylight Time
GMT -5
GMT
Greenwich Mean Time
GMT +0
SGT
Singapore Time
GMT +8
IST
India Standard Time
GMT +5:30
GST
Gulf Standard Time
GMT +4
Time Difference
Central Daylight Time is 5 hours behind Greenwich Mean Time and 13 hours behind Singapore Time and 10 hours and 30 minutes behind India Standard Time and 9 hours behind Gulf Standard Time
11:00 am11:00 in CDT is 4:00 pm16:00 in GMT and is 12:00 am00:00 in SGT and is 9:30 pm21:30 in IST and is 8:00 pm20:00 in GST
CDT to GMT call time
Best time for a conference call or a meeting is between 8am-1pm in CDT which corresponds to 1pm-6pm in GMT
CDT to SGT call time
Best time for a conference call or a meeting is between 6:30am-8:30am in CDT which corresponds to 7:30pm-9:30pm in SGT
CDT to IST call time
Best time for a conference call or a meeting is between 7:30am-9:30am in CDT which corresponds to 6pm-8pm in IST
CDT to GST call time
Best time for a conference call or a meeting is between 8am-10am in CDT which corresponds to 5pm-7pm in GST
11:00 am11:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
4:00 pm16:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:00 am00:00 Singapore Time (SGT). Offset UTC +8:00 hours
9:30 pm21:30 India Standard Time (IST). Offset UTC +5:30 hours
8:00 pm20:00 Gulf Standard Time (GST). Offset UTC +4:00 hours
11:00 am11:00 CDT / 4:00 pm16:00 GMT / 12:00 am00:00 SGT / 9:30 pm21:30 IST / 8:00 pm20:00 GST
| CDT | GMT | SGT | IST | GST |
|---|---|---|---|---|
| 12am (midnight) | 5am | 1pm | 10:30 am | 9am |
| 1am | 6am | 2pm | 11:30 am | 10am |
| 2am | 7am | 3pm | 12:30 pm | 11am |
| 3am | 8am | 4pm | 1:30 pm | 12pm (noon) |
| 4am | 9am | 5pm | 2:30 pm | 1pm |
| 5am | 10am | 6pm | 3:30 pm | 2pm |
| 6am | 11am | 7pm | 4:30 pm | 3pm |
| 7am | 12pm (noon) | 8pm | 5:30 pm | 4pm |
| 8am | 1pm | 9pm | 6:30 pm | 5pm |
| 9am | 2pm | 10pm | 7:30 pm | 6pm |
| 10am | 3pm | 11pm | 8:30 pm | 7pm |
| 11am | 4pm | 12am (midnight) | 9:30 pm | 8pm |
| 12pm (noon) | 5pm | 1am | 10:30 pm | 9pm |
| 1pm | 6pm | 2am | 11:30 pm | 10pm |
| 2pm | 7pm | 3am | 12:30 am | 11pm |
| 3pm | 8pm | 4am | 1:30 am | 12am (midnight) |
| 4pm | 9pm | 5am | 2:30 am | 1am |
| 5pm | 10pm | 6am | 3:30 am | 2am |
| 6pm | 11pm | 7am | 4:30 am | 3am |
| 7pm | 12am (midnight) | 8am | 5:30 am | 4am |
| 8pm | 1am | 9am | 6:30 am | 5am |
| 9pm | 2am | 10am | 7:30 am | 6am |
| 10pm | 3am | 11am | 8:30 am | 7am |
| 11pm | 4am | 12pm (noon) | 9:30 am | 8am |
| 0:00 | 5:00 | 13:00 | 10:30 | 9:00 |
| 1:00 | 6:00 | 14:00 | 11:30 | 10:00 |
| 2:00 | 7:00 | 15:00 | 12:30 | 11:00 |
| 3:00 | 8:00 | 16:00 | 13:30 | 12:00 |
| 4:00 | 9:00 | 17:00 | 14:30 | 13:00 |
| 5:00 | 10:00 | 18:00 | 15:30 | 14:00 |
| 6:00 | 11:00 | 19:00 | 16:30 | 15:00 |
| 7:00 | 12:00 | 20:00 | 17:30 | 16:00 |
| 8:00 | 13:00 | 21:00 | 18:30 | 17:00 |
| 9:00 | 14:00 | 22:00 | 19:30 | 18:00 |
| 10:00 | 15:00 | 23:00 | 20:30 | 19:00 |
| 11:00 | 16:00 | 0:00 | 21:30 | 20:00 |
| 12:00 | 17:00 | 1:00 | 22:30 | 21:00 |
| 13:00 | 18:00 | 2:00 | 23:30 | 22:00 |
| 14:00 | 19:00 | 3:00 | 0:30 | 23:00 |
| 15:00 | 20:00 | 4:00 | 1:30 | 0:00 |
| 16:00 | 21:00 | 5:00 | 2:30 | 1:00 |
| 17:00 | 22:00 | 6:00 | 3:30 | 2:00 |
| 18:00 | 23:00 | 7:00 | 4:30 | 3:00 |
| 19:00 | 0:00 | 8:00 | 5:30 | 4:00 |
| 20:00 | 1:00 | 9:00 | 6:30 | 5:00 |
| 21:00 | 2:00 | 10:00 | 7:30 | 6:00 |
| 22:00 | 3:00 | 11:00 | 8:30 | 7:00 |
| 23:00 | 4:00 | 12:00 | 9:30 | 8:00 |
Central Daylight Time
Offset: CDT is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Cuba, Mexico, United States
Principal Cities: The largest city in the CDT timezone is Chicago from USA with population about 2.696 million people. Other major cities in the area are Havana, Houston, Ciudad Juarez, San Antonio
French: HAC - Heure Avancée du Centre
Spanish: CT - Zona Centro
Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Central Standard Time (CST).
Start: Central Daylight Time (CDT) started on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Central Daylight Time (CDT) ends on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
CDT 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 five 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
- Romeo - Military abbreviation for CDT
- R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- America/Chicago
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Matamoros
- America/Menominee
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Resolute
- America/Winnipeg
- CST6CDT
- Canada/Central
- US/Central
- US/Indiana-Starke
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
- Central Daylight Time - UTC -5
- Cuba Daylight Time - UTC -4
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: It is used in following countries: 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 timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are 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 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 zero hour and zero minutes time differences of the zero meridian.
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
GMT Abbreviation: Several time zones share GMT abbreviation and it could refer to these time zones
- Greenwich Mean Time - UTC +0
- GMT+03:00 - UTC +3
- GMT - UTC +1
- GMT+06:00 - UTC +6
- GMT-01:00 - UTC -1
- GMT+11:00 - UTC +11
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
Singapore Time
Offset: SGT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia
SGT 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 SGT
- H - short form of 'Hotel'
SGT Abbreviation: Several time zones share SGT abbreviation and it could refer to these time zones
- Singapore Time - UTC +8
- South Georgia Time - UTC -2
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 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
- Iran Standard Time - UTC +3:30
Gulf Standard Time
Offset: GST is 4 hours ahead Greenwich Mean Time (GMT) and is used in Asia
GST representations, usage and related time zones
W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- +04 - basic short
- +0400 - basic
- +04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
- +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four 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
- Delta - Military abbreviation for GST
- D - short form of 'Delta'
Time zones with the GMT +4 offset:
- KUYT - Kuybyshev Time
- MSD - Moscow Daylight Time
- SAMT - Samara Time
- AMT - Armenia Time
- AZT - Azerbaijan Time
- D - Delta Time Zone
- GET - Georgia Standard Time
- GST - Gulf Standard Time
- MUT - Mauritius Time
- RET - Reunion Time
- SCT - Seychelles Time
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
