ChST to KOST Converter
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Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
10:00 pm22:00 ChST (UTC+10), Oct 13, 2026 = 11:00 pm23:00 KOST (UTC+11), Oct 13, 2026
ChST is 1 hour behind KOST.
ChST and KOST examples
These examples always use ChST (UTC+10) and KOST (UTC+11). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
ChST is 1 hour behind KOST.
How the time difference changes
ChST is 1 hour behind KOST year-round.
Working hours of 9:00 am to 5:00 pm in ChST correspond to 10:00 am to 6:00 pm in KOST.Working hours of 09:00 to 17:00 in ChST correspond to 10:00 to 18:00 in KOST.
Compare ChST time with KOST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Chamorro Standard Time is 1 hour behind Kosrae Time.
10:00 pm22:00 in ChST is 11:00 pm23:00 in KOST
ChST to KOST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in ChST which corresponds to 10am-5pm10:00-17:00 in KOST
10:00 pm22:00 Chamorro Standard Time (ChST). Offset UTC +10:00 hours
11:00 pm23:00 Kosrae Time (KOST). Offset UTC +11:00 hours
10:00 pm22:00 ChST / 11:00 pm23:00 KOST
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.
| ChST | KOST |
|---|---|
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| 12:00am next day | |
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| 00:00 next day |
Chamorro Standard Time
Offset: ChST is 10 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Guam, Northern Mariana Islands
Principal Cities: The largest city in the ChST time zone is Saipan in the Northern Mariana Islands, with about 48,220 people. Other major cities in this time zone include Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Mangilao Village.
Daylight Saving: Clocks in Chamorro Standard Time (ChST) do not change for daylight saving time, so ChST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
ChST representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
- Kilo - Military abbreviation for ChST
- K - short form of 'Kilo'
- Pacific/Guam
- Pacific/Saipan
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap Time
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
- PETT - Kamchatka Time
- PONT - Pohnpei Standard Time
- SBT - Solomon IslandsTime
- VLAST - Vladivostok Summer Time
- VUT - Vanuatu Time