GMT to LHST Converter
The United Kingdom is on summer time: BST (UTC+1) until Sun, Oct 25.
Iceland and Ghana stay on GMT (UTC+0).
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
12:00 pm12:00 GMT (UTC+0), Oct 13, 2026 = 11:00 pm23:00 LHDT (UTC+11), Oct 13, 2026
GMT is 11 hours behind LHDT.
GMT and LHST examples
These examples always use GMT (UTC+0) and LHST (UTC+10:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
GMT is 10 hours and 30 minutes behind LHST.
How the time difference changes
Depending on seasonal clock changes, GMT is 10 hours and 30 minutes behind LHST or GMT is 11 hours behind LHDT.
Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in GMT correspond to 7:30 pm to 3:30 am (next day) in LHST or working hours of 9:00 am to 5:00 pm in GMT correspond to 8:00 pm to 4:00 am (next day) in LHDT.Depending on seasonal clock changes, working hours of 09:00 to 17:00 in GMT correspond to 19:30 to 03:30 (next day) in LHST or working hours of 09:00 to 17:00 in GMT correspond to 20:00 to 04:00 (next day) in LHDT.
Compare GMT time with LHST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 11 hours behind Lord Howe Daylight Time.
12:00 pm12:00 in GMT is 11:00 pm23:00 in LHDT
GMT to LHDT call time
Best time for a conference call or a meeting is between 7am-8am07:00-08:00 in GMT which corresponds to 6pm-7pm18:00-19:00 in LHDT. Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
11:00 pm23:00 Lord Howe Daylight Time (LHDT). Offset UTC +11:00 hours
12:00 pm12:00 GMT / 11:00 pm23:00 LHDT
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.
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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
Lord Howe Standard Time
Offset: LHST is 10 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Australia
Today the shaded areas are on UTC+11.
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward 30 minutes for daylight saving time and observe Lord Howe Daylight Time (LHDT).
End: Lord Howe Standard Time (LHST) ended on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set 30 minutes forward to Sunday, October 4, 2026, 2:30 am02:30 local daylight time instead. Standard time ends annually on the first Sunday of October.
Start: Lord Howe Standard Time (LHST) starts on Sunday, April 4, 2027 at 2:00 am02:00 local time and clocks are set 30 minutes back to Sunday, April 4, 2027, 1:30 am01:30. Standard time starts annually on the first Sunday of April.
LHST representations, usage and related time zones
- +1030 - basic
- +10:30 - extended
- +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time