This CET to JST converter turns any time in Central European Time (CET) into Japan Standard Time (JST), using your device clock so daylight saving is applied automatically. JST is 8 hours ahead of CET when both zones are on standard time, and 7 hours ahead during the summer months when clocks have shifted. CET is UTC+1 (CEST: UTC+2); JST is UTC+9.
CET covers Paris, Berlin, Madrid; JST covers Tokyo, Osaka. Because only CET observes daylight saving time, the difference is not constant through the year. The tables below show both cases, and the converter at the top always uses the rule in force on the date you pick.
CET and JST UTC offsets
CET
UTC+1
Central European Time
CEST UTC+2 from March 29 to October 25, 2026
JST
UTC+9
Japan Standard Time
No daylight saving time
CET to JST conversion table (standard time)
| CET | JST |
|---|---|
| 12 am | 8 am |
| 3 am | 11 am |
| 6 am | 2 pm |
| 8 am | 4 pm |
| 9 am | 5 pm |
| 10 am | 6 pm |
| 11 am | 7 pm |
| 12 pm | 8 pm |
| 1 pm | 9 pm |
| 2 pm | 10 pm |
| 3 pm | 11 pm |
| 4 pm | 12 amnext day |
| 5 pm | 1 amnext day |
| 6 pm | 2 amnext day |
| 8 pm | 4 amnext day |
| 10 pm | 6 amnext day |
CET to JST during daylight saving
Between the dates listed above, the difference is 7 hours instead of 8 hours.
| CET/CEST | JST |
|---|---|
| 12 am | 7 am |
| 3 am | 10 am |
| 6 am | 1 pm |
| 8 am | 3 pm |
| 9 am | 4 pm |
| 10 am | 5 pm |
| 11 am | 6 pm |
| 12 pm | 7 pm |
| 1 pm | 8 pm |
| 2 pm | 9 pm |
| 3 pm | 10 pm |
| 4 pm | 11 pm |
| 5 pm | 12 amnext day |
| 6 pm | 1 amnext day |
| 8 pm | 3 amnext day |
| 10 pm | 5 amnext day |
Frequently asked questions
What is the time difference between CET and JST?
JST is 8 hours ahead of CET on standard time. During daylight saving the gap changes to 7 hours. That comes from the UTC offsets: CET is UTC+1 and JST is UTC+9. For example, 9 am CET = 5 pm JST, and in summer 9 am CET = 4 pm JST.
Is JST ahead of or behind CET?
JST is 8 hours ahead of CET, so when it is noon in CET it is 8 pm in JST. Ahead means the clock there already shows a later time; a call at 5 pm CET lands at 1 am JST.
Does CET or JST observe daylight saving time in 2026?
CET switches to CEST (UTC+2) on March 29 and back on October 25 in 2026. JST keeps UTC+9 all year. Between those dates the difference in the table above shifts by an hour, which is the usual cause of missed calls in spring and autumn.
What is the best time for a meeting between CET and JST?
Office hours (9 am to 5 pm) do not overlap at all with a 8 hours difference. The least painful options are early morning in CET or early evening in JST; for example 8 am CET = 4 pm JST and 6 pm CET = 2 am JST the next day. Rotate the inconvenient slot between the two sides for recurring calls.
Which cities use CET and JST?
CET (Central European Time) is used in Paris, Berlin, Madrid, Rome, Amsterdam. JST (Japan Standard Time) is used in Tokyo, Osaka. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.