CET to JST Time Converter
Japan Standard Time (JST) is currently 8 hours ahead of Central European Time (CET). CET is UTC+1 and JST is UTC+9. 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 9:00 AM and 9:00 AM in CET, which is 5:00 PM to 5:00 PM in JST.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: CET to JST
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?
CET and JST are fixed offsets, so the difference between them 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.
JST is UTC+9. Japan has no daylight saving, so this offset never changes.
Frequently Asked Questions
How many hours ahead is JST compared to CET?
JST is currently 8 hours ahead of CET. CET and JST are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in CET in JST?
9:00 AM in CET is 5:00 PM in JST.
What is the best time for a call between CET and JST?
Both sides are inside 9:00 AM to 5:00 PM office hours between 9:00 AM and 9:00 AM in CET, which is 5:00 PM to 5:00 PM in JST.