Compare CET and JST
See the current CET to JST time difference, how daylight saving affects the gap, and the best hours to schedule meetings.
How to Find the Time Difference Between CET and JST
Open the CET to JST converter: Go to https://www.xconvert.com/time-converter/cet-vs-jst. The page loads with CET and JST already shown in the visual comparison grid, which is useful if you are scheduling a call between Central Europe and Japan for manufacturing, automotive, gaming, or financial operations.
Add comparison cities relevant to your schedule: Click + Add City and search for cities such as Berlin, Paris, or Tokyo if you want city-specific labels, or add London and New York to compare how a Europe-Japan meeting fits into a wider global team schedule. This is especially practical for companies coordinating EU headquarters with Tokyo offices, suppliers in Germany, or client support teams serving Asian markets.
Drag to select a workable meeting window: Click Select to enter selection mode, then drag across the colored timeline on the CET row to highlight a time range in purple. For example, dragging from 9:00 AM to 11:00 AM CET shows 5:00 PM to 7:00 PM JST during standard time, which is often a realistic overlap for same-day business calls between Europe and Japan; during Central European summer time, the same European window aligns with 4:00 PM to 6:00 PM in Japan because the offset changes by one hour.
Export and share the chosen time slot: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is helpful when sending a confirmed meeting time to a distributed team, because recipients in Germany, France, Spain, or Japan will see the event translated into their local calendar time automatically.
CET vs JST Offset Explained
CET (Central European Time) is UTC+1, while JST (Japan Standard Time) is UTC+9, so JST is 8 hours ahead of CET. That means when it is 9:00 AM in CET, it is 5:00 PM in JST on the same calendar day. This large eastward gap makes morning hours in Central Europe the most practical overlap with late afternoon or early evening in Japan.
The seasonal complication is that many places associated with CET do not stay on CET all year. Most of continental Europe switches to CEST (Central European Summer Time, UTC+2) from the last Sunday in March to the last Sunday in October. In 2025, that means clocks move forward on 30 March 2025 and move back on 26 October 2025, so the Europe-Japan difference becomes 7 hours during that period instead of 8.
Japan does not observe daylight saving time. JST remains UTC+9 year-round, including in Tokyo, Osaka, Yokohama, Nagoya, and Sapporo. Because Japan keeps a fixed offset, the only seasonal change in a CET vs JST comparison comes from the European side, which is why a meeting that works at 9:00 AM in Berlin in January may need to shift by an hour in April if you want to keep the same local time in Tokyo.
In practical terms, the best cross-region meeting windows are often 8:00 AM to 11:00 AM in Central Europe, which corresponds to 4:00 PM to 7:00 PM in Japan during European summer time, or 5:00 PM to 8:00 PM in Japan during standard time. This matters for industries with active Europe-Japan coordination, including automotive supply chains, semiconductor procurement, logistics, gaming, and multinational banking. A CET afternoon, such as 3:00 PM CET, lands at 11:00 PM JST, which is usually too late for routine office communication.
Frequently Asked Questions
What is the exact time difference between CET and JST?
JST is 8 hours ahead of CET when Europe is on standard time. If it is 10:00 AM CET, it is 6:00 PM JST the same day. However, when Central Europe switches to summer time and uses CEST (UTC+2), Japan is then 7 hours ahead instead.
Why does the CET to JST time difference change during the year?
The difference changes because countries using CET typically observe daylight saving time, while Japan does not. Central Europe moves from UTC+1 to UTC+2 on the last Sunday in March and returns to UTC+1 on the last Sunday in October, so the Europe-Japan gap narrows from 8 hours to 7 hours during that summer period.
Does Japan ever use daylight saving time?
No, Japan uses Japan Standard Time (UTC+9) throughout the entire year. Cities including Tokyo, Osaka, Kyoto, Fukuoka, and Sapporo do not move clocks forward or backward seasonally, which makes Japan easier to schedule with than regions that change offset twice a year.
What time in Japan matches a normal CET workday?
A typical 9:00 AM to 5:00 PM CET workday corresponds to 5:00 PM to 1:00 AM JST during standard time. During Central European summer time, that same European workday becomes 4:00 PM to 12:00 AM JST, so only the European morning overlaps comfortably with standard office hours in Japan.
What is the best meeting time between Central Europe and Japan?
For most business use cases, 8:00 AM to 10:00 AM in Central Europe is one of the best windows. That usually translates to 4:00 PM to 6:00 PM JST in European summer time or 5:00 PM to 7:00 PM JST in standard time, which works well for same-day calls between European headquarters and teams in Tokyo.
Is CET the same as Berlin or Paris time all year?
No, not all year. Berlin, Paris, Madrid, Rome, Amsterdam, Brussels, and Vienna use CET in winter and CEST in summer, so if you are comparing those cities with Japan, the actual difference is 8 hours in winter and 7 hours in summer. This is important when booking flights, setting webinar times, or arranging supplier calls months in advance.
How can I quickly schedule a CET to JST meeting without doing the math manually?
Using the visual grid on the converter page is faster than calculating offsets by hand, especially around DST transition weeks. You can drag a proposed slot on the CET row, instantly see the matching JST time, and then export it via ICS, Google Calendar, Gmail, Copy to clipboard, or Share link so colleagues in Europe and Japan receive the correct localized time.