JST to CET Time Converter
Central European Time (CET) is currently 8 hours behind Japan Standard Time (JST). JST is UTC+9 and CET is UTC+1. The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 5:00 PM and 5:00 PM in JST, which is 9:00 AM to 9:00 AM in CET.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: JST to CET
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
JST and CET are fixed offsets, so the difference between them never changes.
JST is UTC+9. Japan has no daylight saving, so this offset never changes.
CET is UTC+1, used across most of continental Europe in winter. The region switches to CEST (UTC+2) from late March to late October.
Frequently Asked Questions
How many hours behind is CET compared to JST?
CET is currently 8 hours behind JST. JST and CET are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in JST in CET?
9:00 AM in JST is 1:00 AM in CET.
What is the best time for a call between JST and CET?
Both sides are inside 9:00 AM to 5:00 PM office hours between 5:00 PM and 5:00 PM in JST, which is 9:00 AM to 9:00 AM in CET.