KOST to ACDT Converter
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Quick answers
Selected conversion
11:00 pm23:00 KOST (UTC+11), Nov 1, 2026 = 10:30 pm22:30 ACDT (UTC+10:30), Nov 1, 2026
KOST is 30 minutes ahead of ACDT.
KOST and ACDT examples
These examples always use KOST (UTC+11) and ACDT (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.
KOST is 30 minutes ahead of ACDT.
How the time difference changes
Depending on seasonal clock changes, KOST is 30 minutes ahead of ACDT or KOST is 1 hour and 30 minutes ahead of ACST.
Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in KOST correspond to 8:30 am to 5:30 pm in ACDT or working hours of 9:00 am to 6:00 pm in KOST correspond to 7:30 am to 4:30 pm in ACST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in KOST correspond to 08:30 to 17:30 in ACDT or working hours of 09:00 to 18:00 in KOST correspond to 07:30 to 16:30 in ACST.
Compare KOST time with ACDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Kosrae Time is 30 minutes ahead of Australian Central Daylight Time.
11:00 pm23:00 in KOST is 10:30 pm22:30 in ACDT
KOST to ACDT call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in KOST which corresponds to 9am-5:30pm09:00-17:30 in ACDT
11:00 pm23:00 Kosrae Time (KOST). Offset UTC +11:00 hours
10:30 pm22:30 Australian Central Daylight Time (ACDT). Offset UTC +10:30 hours
11:00 pm23:00 KOST / 10:30 pm22:30 ACDT
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.
| KOST | ACDT |
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| 23:30 previous day | |
| 00:30 | |
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Kosrae Time
Offset: KOST is 11 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Micronesia
Principal Cities: The largest city in the KOST time zone is Tofol in Micronesia, with about 9,686 people. Other major cities in this time zone include Lelu.
Daylight Saving: Clocks in Kosrae Time (KOST) do not change for daylight saving time, so KOST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
KOST representations, usage and related time zones
- +11 - basic short
- +1100 - basic
- +11:00 - extended
- +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates an offset of eleven hours to the east of the zero meridian.
- Lima - Military abbreviation for KOST
- L - short form of 'Lima'
- AEDT - Australian Eastern Daylight Time
- BST - Bougainville Standard Time
- KOST - Kosrae Time
- L - Lima Time Zone
- LHDT - Lord Howe Daylight Time
- MAGT - Magadan Time
- NCT - New Caledonia Time
- NFT - Norfolk Time
- PONT - Pohnpei Standard Time
- SBT - Solomon Islands Time
- VLAST - Vladivostok Summer Time
- VUT - Vanuatu Time
Australian Central Daylight Time
Offset: ACDT is 10 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Australia
Principal Cities: The largest city in the ACDT time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Mount Gambier, Mount Barker, Whyalla, Gawler.
Today all shaded areas are on ACDT.
Daylight Saving: Australian Central Daylight Time (ACDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Australian Central Standard Time (ACST).
Start: Australian Central Daylight Time (ACDT) started on Sunday, October 4, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, October 4, 2026, 3:00 am03:00. Daylight saving starts annually on the first Sunday of October.
End: Australian Central Daylight Time (ACDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.
See Australia daylight saving time and upcoming clock changes worldwide.
ACDT 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.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/South
- Australia/Yancowinna
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time