This JST to CET converter turns any time in Japan Standard Time (JST) into Central European Time (CET), using your device clock so daylight saving is applied automatically. CET is 8 hours behind JST when both zones are on standard time, and 7 hours behind during the summer months when clocks have shifted. JST is UTC+9; CET is UTC+1 (CEST: UTC+2).
JST covers Tokyo, Osaka; CET covers Paris, Berlin, Madrid. 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.
JST and CET UTC offsets
JST
UTC+9
Japan Standard Time
No daylight saving time
CET
UTC+1
Central European Time
CEST UTC+2 from March 29 to October 25, 2026
JST to CET conversion table (standard time)
| JST | CET |
|---|---|
| 12 am | 4 pmprevious day |
| 3 am | 7 pmprevious day |
| 6 am | 10 pmprevious day |
| 8 am | 12 am |
| 9 am | 1 am |
| 10 am | 2 am |
| 11 am | 3 am |
| 12 pm | 4 am |
| 1 pm | 5 am |
| 2 pm | 6 am |
| 3 pm | 7 am |
| 4 pm | 8 am |
| 5 pm | 9 am |
| 6 pm | 10 am |
| 8 pm | 12 pm |
| 10 pm | 2 pm |
JST to CET during daylight saving
Between the dates listed above, the difference is 7 hours instead of 8 hours.
| JST | CET/CEST |
|---|---|
| 12 am | 5 pmprevious day |
| 3 am | 8 pmprevious day |
| 6 am | 11 pmprevious day |
| 8 am | 1 am |
| 9 am | 2 am |
| 10 am | 3 am |
| 11 am | 4 am |
| 12 pm | 5 am |
| 1 pm | 6 am |
| 2 pm | 7 am |
| 3 pm | 8 am |
| 4 pm | 9 am |
| 5 pm | 10 am |
| 6 pm | 11 am |
| 8 pm | 1 pm |
| 10 pm | 3 pm |
Frequently asked questions
What is the time difference between JST and CET?
CET is 8 hours behind JST on standard time. During daylight saving the gap changes to 7 hours. That comes from the UTC offsets: JST is UTC+9 and CET is UTC+1. For example, 9 am JST = 1 am CET, and in summer 9 am JST = 2 am CET.
Is CET ahead of or behind JST?
CET is 8 hours behind JST, so when it is noon in JST it is 4 am in CET. Ahead means the clock there already shows a later time; a call at 5 pm JST lands at 9 am CET.
Does JST or CET observe daylight saving time in 2026?
JST keeps UTC+9 all year. CET switches to CEST (UTC+2) on March 29 and back on October 25. 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 JST and CET?
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 JST = 12 am CET and 6 pm JST = 10 am CET. Rotate the inconvenient slot between the two sides for recurring calls.
Which cities use JST and CET?
JST (Japan Standard Time) is used in Tokyo, Osaka. CET (Central European Time) is used in Paris, Berlin, Madrid, Rome, Amsterdam. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.