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In Japan, there is only one time zone in use: Japan Standard Time, JST (UTC+09). Time in Japan does not change because it does not observe Daylight Saving Time.
For comparing the current time in Japan and United Kingdom or any other country combination, visit time comparison. For an introduction to UTC and world time, read UTC by country. Time changes in Japan are shown below by city, state or region.
| Regions | Standard Time | Daylight Saving Time | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Time zone | 2025 | 2026 | 2027 | Time zone | 2025 | 2026 | 2027 | |||
| Japan Standard Time JST (UTC+09) | UTC+09 all year long | No Daylight Saving Time | |||||||
The information in this page comes from data published in the Time Zone Database managed by the Internet Assigned Numbers Authority (IANA).
| Year | Time zone Abbreviation | UTC Offset | Time zone Name | Daylight Saving Time | Begins (local time) |
|---|---|---|---|---|---|
| 1951 | JST | UTC+09 | Japan Standard Time | no | Sunday, September 9 1951, 01:00 AM |
| 1951 | JDT | UTC+10 | yes | Sunday, May 6 1951, 12:00 AM | |
| 1950 | JST | UTC+09 | Japan Standard Time | no | Sunday, September 10 1950, 01:00 AM |
| 1950 | JDT | UTC+10 | yes | Sunday, May 7 1950, 12:00 AM | |
| 1949 | JST | UTC+09 | Japan Standard Time | no | Sunday, September 11 1949, 01:00 AM |
| 1949 | JDT | UTC+10 | yes | Sunday, April 3 1949, 12:00 AM | |
| 1948 | JST | UTC+09 | Japan Standard Time | no | Sunday, September 12 1948, 01:00 AM |
| 1948 | JDT | UTC+10 | yes | Sunday, May 2 1948, 12:00 AM | |
| 1888 | JST | UTC+09 | Japan Standard Time | no | Sunday, January 1 1888, 12:18 AM |