CHADT to GMT Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.
Iceland and Ghana stay on GMT (UTC+0).
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Quick answers
Selected conversion
2:00 am02:00 CHADT (UTC+13:45), Oct 13, 2026 = 12:15 pm12:15 GMT (UTC+0), Oct 12, 2026
CHADT is 13 hours and 45 minutes ahead of GMT.
CHADT and GMT examples
These examples always use CHADT (UTC+13:45) and GMT (UTC+0). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
CHADT is 13 hours and 45 minutes ahead of GMT.
How the time difference changes
Depending on seasonal clock changes, CHAST is 12 hours and 45 minutes ahead of GMT or CHADT is 13 hours and 45 minutes ahead of GMT.
Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in CHAST correspond to 8:15 pm (previous day) to 4:15 am in GMT or working hours of 9:00 am to 5:00 pm in CHADT correspond to 7:15 pm (previous day) to 3:15 am in GMT.Depending on seasonal clock changes, working hours of 09:00 to 17:00 in CHAST correspond to 20:15 (previous day) to 04:15 in GMT or working hours of 09:00 to 17:00 in CHADT correspond to 19:15 (previous day) to 03:15 in GMT.
Compare CHADT time with GMT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Chatham Island Daylight Time is 13 hours and 45 minutes ahead of Greenwich Mean Time.
2:00 am02:00 in CHADT is 12:15 pm12:15 in GMT
CHADT to GMT call time
Best time for a conference call or a meeting is between 7:30am-8:30am07:30-08:30 in CHADT which corresponds to 5:45pm-6:45pm17:45-18:45 in GMT (previous day). Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.
2:00 am02:00 Chatham Island Daylight Time (CHADT). Offset UTC +13:45 hours
12:15 pm12:15 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
2:00 am02:00 CHADT / 12:15 pm12:15 GMT
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.
| CHADT | GMT |
|---|---|
| 10:15am previous day | |
| 11:15am previous day | |
| 12:15pm previous day | |
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| 12:15am | |
| 1:15am | |
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| 3:15am | |
| 4:15am | |
| 5:15am | |
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| 10:15 previous day | |
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| 15:15 previous day | |
| 16:15 previous day | |
| 17:15 previous day | |
| 18:15 previous day | |
| 19:15 previous day | |
| 20:15 previous day | |
| 21:15 previous day | |
| 22:15 previous day | |
| 23:15 previous day | |
| 00:15 | |
| 01:15 | |
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| 03:15 | |
| 04:15 | |
| 05:15 | |
| 06:15 | |
| 07:15 | |
| 08:15 | |
| 09:15 |
Chatham Island Daylight Time
Offset: CHADT is 13 hours and 45 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: New Zealand
Principal Cities: The largest city in the CHADT time zone is Waitangi in New Zealand, with about 140 people.
Today all shaded areas are on CHADT.
Daylight Saving: Chatham Island Daylight Time (CHADT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Chatham Island Standard Time (CHAST).
Start: Chatham Island Daylight Time (CHADT) started on Sunday, September 27, 2026 at 2:45 am02:45 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:45 am03:45. Daylight saving starts annually on the last Sunday of September.
End: Chatham Island Daylight Time (CHADT) ends on Sunday, April 4, 2027 at 3:45 am03:45 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:45 am02:45 local standard time instead. Daylight saving ends annually on the first Sunday of April.
CHADT representations, usage and related time zones
- +1345 - basic
- +13:45 - extended
- +1345 - sign character (+) followed by a four digit time providing hours (13) and minutes (45) of the offset. Indicates an offset of thirteen hours and forty-five minutes to the east of the zero meridian.
Greenwich Mean Time
Offset: GMT is the same as Greenwich Mean Time (GMT).
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 the 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 the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.
Today the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time).
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 the zero UTC/GMT offset.
- 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
- 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