JST to ChST Converter
Quick answers
JST is 1 hour behind ChST. JST uses GMT +9, and ChST uses GMT +10 for this comparison.
For example, 9:00 pm JST is 10:00 pm ChST. Use the converter above to adjust the date or time and create a shareable meeting link.
Best meeting overlap: 9am-4pm JST, which is 10am-5pm ChST.
Compare JST time with ChST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Japan Standard Time is 1 hour behind Chamorro Standard Time
9:00 pm21:00 in JST is 10:00 pm22:00 in ChST
JST to ChST call time
Best time for a conference call or a meeting is between 9am-4pm in JST which corresponds to 10am-5pm in ChST
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
10:00 pm22:00 Chamorro Standard Time (ChST). Offset UTC +10:00 hours
9:00 pm21:00 JST / 10:00 pm22:00 ChST
| JST | ChST |
|---|---|
| 12am (midnight) | 1am |
| 1am | 2am |
| 2am | 3am |
| 3am | 4am |
| 4am | 5am |
| 5am | 6am |
| 6am | 7am |
| 7am | 8am |
| 8am | 9am |
| 9am | 10am |
| 10am | 11am |
| 11am | 12pm (noon) |
| 12pm (noon) | 1pm |
| 1pm | 2pm |
| 2pm | 3pm |
| 3pm | 4pm |
| 4pm | 5pm |
| 5pm | 6pm |
| 6pm | 7pm |
| 7pm | 8pm |
| 8pm | 9pm |
| 9pm | 10pm |
| 10pm | 11pm |
| 11pm | 12am (midnight) |
| 00:00 | 01:00 |
| 01:00 | 02:00 |
| 02:00 | 03:00 |
| 03:00 | 04:00 |
| 04:00 | 05:00 |
| 05:00 | 06:00 |
| 06:00 | 07:00 |
| 07:00 | 08:00 |
| 08:00 | 09:00 |
| 09:00 | 10:00 |
| 10:00 | 11:00 |
| 11:00 | 12:00 |
| 12:00 | 13:00 |
| 13:00 | 14:00 |
| 14:00 | 15:00 |
| 15:00 | 16:00 |
| 16:00 | 17:00 |
| 17:00 | 18:00 |
| 18:00 | 19:00 |
| 19:00 | 20:00 |
| 20:00 | 21:00 |
| 21:00 | 22:00 |
| 22:00 | 23:00 |
| 23:00 | 00:00 |
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 8.337 million people. Other major cities in this time zone include Yokohama, Osaka shi, Nagoya shi, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
Chamorro Standard Time
Offset: ChST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Pacific
Countries using this time zone: Guam, Northern Mariana Islands
Principal Cities: The largest city in the ChST time zone is Saipan in 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.
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