UTC to GMT to Tehran, Iran to HKT to UTC
Time Difference
Universal Time Coordinated is 0 hours ahead of Greenwich Mean Time and 4 hours and 30 minutes behind IDT (Iran Daylight Time) and 8 hours behind Hong Kong Time and 0 hours ahead of Universal Time Coordinated
6:00 pm18:00 in UTC is 6:00 pm18:00 in GMT and is 10:30 pm22:30 in Tehran, Iran and is 2:00 am02:00 in HKT and is 6:00 pm18:00 in UTC
UTC to GMT call time
Best time for a conference call or a meeting is between 8am-6pm in UTC which corresponds to 8am-6pm in GMT
UTC to Tehran call time
Best time for a conference call or a meeting is between 8am-1:30pm in UTC which corresponds to 12:30pm-6pm in Tehran
UTC to HKT call time
Best time for a conference call or a meeting is between 8am-10am in UTC which corresponds to 4pm-6pm in HKT
UTC to UTC call time
Best time for a conference call or a meeting is between 8am-6pm in UTC which corresponds to 8am-6pm in UTC
6:00 pm18:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
6:00 pm18:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:30 pm22:30 IDT (Iran Daylight Time) (Tehran, Iran). Offset UTC +4:30 hours
2:00 am02:00 Hong Kong Time (HKT). Offset UTC +8:00 hours
6:00 pm18:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
6:00 pm18:00 UTC / 6:00 pm18:00 GMT / 10:30 pm22:30 Tehran, Iran / 2:00 am02:00 HKT / 6:00 pm18:00 UTC
| UTC | GMT | Tehran, Iran | HKT | UTC |
|---|---|---|---|---|
| 12am (midnight) | 12am (midnight) | 4:30 am | 8am | 12am (midnight) |
| 1am | 1am | 5:30 am | 9am | 1am |
| 2am | 2am | 6:30 am | 10am | 2am |
| 3am | 3am | 7:30 am | 11am | 3am |
| 4am | 4am | 8:30 am | 12pm (noon) | 4am |
| 5am | 5am | 9:30 am | 1pm | 5am |
| 6am | 6am | 10:30 am | 2pm | 6am |
| 7am | 7am | 11:30 am | 3pm | 7am |
| 8am | 8am | 12:30 pm | 4pm | 8am |
| 9am | 9am | 1:30 pm | 5pm | 9am |
| 10am | 10am | 2:30 pm | 6pm | 10am |
| 11am | 11am | 3:30 pm | 7pm | 11am |
| 12pm (noon) | 12pm (noon) | 4:30 pm | 8pm | 12pm (noon) |
| 1pm | 1pm | 5:30 pm | 9pm | 1pm |
| 2pm | 2pm | 6:30 pm | 10pm | 2pm |
| 3pm | 3pm | 7:30 pm | 11pm | 3pm |
| 4pm | 4pm | 8:30 pm | 12am (midnight) | 4pm |
| 5pm | 5pm | 9:30 pm | 1am | 5pm |
| 6pm | 6pm | 10:30 pm | 2am | 6pm |
| 7pm | 7pm | 11:30 pm | 3am | 7pm |
| 8pm | 8pm | 12:30 am | 4am | 8pm |
| 9pm | 9pm | 1:30 am | 5am | 9pm |
| 10pm | 10pm | 2:30 am | 6am | 10pm |
| 11pm | 11pm | 3:30 am | 7am | 11pm |
| 0:00 | 0:00 | 4:30 | 8:00 | 0:00 |
| 1:00 | 1:00 | 5:30 | 9:00 | 1:00 |
| 2:00 | 2:00 | 6:30 | 10:00 | 2:00 |
| 3:00 | 3:00 | 7:30 | 11:00 | 3:00 |
| 4:00 | 4:00 | 8:30 | 12:00 | 4:00 |
| 5:00 | 5:00 | 9:30 | 13:00 | 5:00 |
| 6:00 | 6:00 | 10:30 | 14:00 | 6:00 |
| 7:00 | 7:00 | 11:30 | 15:00 | 7:00 |
| 8:00 | 8:00 | 12:30 | 16:00 | 8:00 |
| 9:00 | 9:00 | 13:30 | 17:00 | 9:00 |
| 10:00 | 10:00 | 14:30 | 18:00 | 10:00 |
| 11:00 | 11:00 | 15:30 | 19:00 | 11:00 |
| 12:00 | 12:00 | 16:30 | 20:00 | 12:00 |
| 13:00 | 13:00 | 17:30 | 21:00 | 13:00 |
| 14:00 | 14:00 | 18:30 | 22:00 | 14:00 |
| 15:00 | 15:00 | 19:30 | 23:00 | 15:00 |
| 16:00 | 16:00 | 20:30 | 0:00 | 16:00 |
| 17:00 | 17:00 | 21:30 | 1:00 | 17:00 |
| 18:00 | 18:00 | 22:30 | 2:00 | 18:00 |
| 19:00 | 19:00 | 23:30 | 3:00 | 19:00 |
| 20:00 | 20:00 | 0:30 | 4:00 | 20:00 |
| 21:00 | 21:00 | 1:30 | 5:00 | 21:00 |
| 22:00 | 22:00 | 2:30 | 6:00 | 22:00 |
| 23:00 | 23:00 | 3:30 | 7:00 | 23:00 |
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
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +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.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- 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
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
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +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.
- Zulu - Military abbreviation for GMT
- Z - short form of 'Zulu'
- 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
- Greenwich Mean Time - UTC +0
- GMT+03:00 - UTC +3
- GMT+06:00 - UTC +6
- GMT - UTC +0
- GMT+11:00 - UTC +11
- 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
Tehran Information
Time Zone
IRDT - Iran Daylight Time
+4:30 hours during Iran Daylight Time.
Tehran Facts
Hong Kong Time
Offset: HKT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Hong Kong
Principal Cities: The largest city in the HKT timezone is Hong Kong from Hong Kong with population about 7.013 million people. Other major cities in the area are Kowloon, Tsuen Wan, Yuen Long Kau Hui, Sha Tin
Daylight Saving: Hong Kong Time (HKT) is not adjusted for daylight saving therefore HKT 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, Hong Kong Time remains the same
HKT representations, usage and related time zones
- +08 - basic short
- +0800 - basic
- +08:00 - extended
- +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.
- Hotel - Military abbreviation for HKT
- H - short form of 'Hotel'
- Asia/Hong_Kong
- Hongkong
- 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
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
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +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.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- 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