UTC to JST Converter
Quick answers
Selected conversion
12:00 pm12:00 UTC (UTC+0), Oct 12, 2026 = 9:00 pm21:00 JST (UTC+9), Oct 12, 2026
UTC is 9 hours behind JST.
UTC and JST examples
These examples always use UTC (UTC+0) and JST (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
UTC is 9 hours behind JST.
How the time difference changes
UTC is 9 hours behind JST year-round.
Working hours of 9:00 am to 5:00 pm in UTC correspond to 6:00 pm to 2:00 am (next day) in JST.Working hours of 09:00 to 17:00 in UTC correspond to 18:00 to 02:00 (next day) in JST.
Compare UTC time with JST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Universal Time Coordinated is 9 hours behind Japan Standard Time.
12:00 pm12:00 in UTC is 9:00 pm21:00 in JST
UTC to JST call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in UTC which corresponds to 5pm-6pm17:00-18:00 in JST
12:00 pm12:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
12:00 pm12:00 UTC / 9:00 pm21:00 JST
| UTC | JST |
|---|---|
| 12:00am | 9:00am |
| 1:00am | 10:00am |
| 2:00am | 11:00am |
| 3:00am | 12:00pm |
| 4:00am | 1:00pm |
| 5:00am | 2:00pm |
| 6:00am | 3:00pm |
| 7:00am | 4:00pm |
| 8:00am | 5:00pm |
| 9:00am | 6:00pm |
| 10:00am | 7:00pm |
| 11:00am | 8:00pm |
| 12:00pm | 9:00pm |
| 1:00pm | 10:00pm |
| 2:00pm | 11:00pm |
| 3:00pm | 12:00am |
| 4:00pm | 1:00am |
| 5:00pm | 2:00am |
| 6:00pm | 3:00am |
| 7:00pm | 4:00am |
| 8:00pm | 5:00am |
| 9:00pm | 6:00am |
| 10:00pm | 7:00am |
| 11:00pm | 8:00am |
| 00:00 | 09:00 |
| 01:00 | 10:00 |
| 02:00 | 11:00 |
| 03:00 | 12:00 |
| 04:00 | 13:00 |
| 05:00 | 14:00 |
| 06:00 | 15:00 |
| 07:00 | 16:00 |
| 08:00 | 17:00 |
| 09:00 | 18:00 |
| 10:00 | 19:00 |
| 11:00 | 20:00 |
| 12:00 | 21:00 |
| 13:00 | 22:00 |
| 14:00 | 23:00 |
| 15:00 | 00:00 |
| 16:00 | 01:00 |
| 17:00 | 02:00 |
| 18:00 | 03:00 |
| 19:00 | 04:00 |
| 20:00 | 05:00 |
| 21:00 | 06:00 |
| 22:00 | 07:00 |
| 23:00 | 08:00 |
Universal Time Coordinated
Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal
Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.
UTC 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 UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Universal Time Coordinated
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone
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 9.733 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; see upcoming clock changes worldwide.
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