UTC to JST Converter
Coordinated Universal Time to Japan Standard Time: live clocks, today's full conversion table, and the best hours to call. Daylight saving is handled automatically.
About UTC and JST
Coordinated Universal Time (UTC) is the global reference clock used in aviation, servers and log files. UTC never changes for daylight saving.
Japan Standard Time (JST) is used across Japan, including Tokyo and Osaka. Japan does not observe daylight saving time.
Time difference between UTC and JST
JST is 9 hours ahead of UTC throughout the year. The clocks and table above are computed live from the official IANA time zone database in your browser, so daylight saving transitions are always already included.
UTC to JST conversion for every hour
9:00 AM UTC is 6:00 PM JST. 10:00 AM UTC is 7:00 PM JST. 12:00 PM UTC is 9:00 PM JST. 2:00 PM UTC is 11:00 PM JST. 3:00 PM UTC is 12:00 AM JST the next day. 4:00 PM UTC is 1:00 AM JST the next day. 5:00 PM UTC is 2:00 AM JST the next day. The table at the top of this page lists all 24 hours, updated live for today's date.
Best hours for meetings
Scan the table for rows where both sides land inside working hours (9:00 to 18:00). Rows where one side is early morning or late evening are workable for a quick call; avoid rows where either side is in the middle of the night. To add a third city, type it into the planner below, or open the full time zone converter and meeting planner.
Related conversions
JST to UTC IST to UTC UTC to IST EST to UTC UTC to EST PST to UTC UTC to PST UTC to CET