JST to CEST Time Converter
Central European Summer Time (CEST) is currently 7 hours behind Japan Standard Time (JST). JST is UTC+9 and CEST is UTC+2. 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 4:00 PM and 5:00 PM in JST, which is 9:00 AM to 10:00 AM in CEST.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: JST to CEST
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 CEST are fixed offsets, so the difference between them never changes.
JST is UTC+9. Japan has no daylight saving, so this offset never changes.
CEST is UTC+2, the summer counterpart of CET, used from late March to late October.
Frequently Asked Questions
How many hours behind is CEST compared to JST?
CEST is currently 7 hours behind JST. JST and CEST are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in JST in CEST?
9:00 AM in JST is 2:00 AM in CEST.
What is the best time for a call between JST and CEST?
Both sides are inside 9:00 AM to 5:00 PM office hours between 4:00 PM and 5:00 PM in JST, which is 9:00 AM to 10:00 AM in CEST.