UTC to JST — Time Zone Converter
Coordinated Universal Time (UTC, UTC+0) covers the global reference timeline; Japan Standard Time (JST, UTC+9) covers Japan. In standard time, JST is 9 hours ahead of UTC. The practical window is early morning in the global reference timeline, which lands in the late afternoon or evening in Japan. Use the live converter below — it applies today's IANA time zone data, including daylight saving time, and gives you a meeting schedule you can paste straight into email or Slack.
UTC to JST, hour by hour (today)
Frequently asked questions
What is the time difference between UTC and JST?+
Coordinated Universal Time (UTC) is UTC+0 and Japan Standard Time (JST) is UTC+9, so in standard time JST is 9 hours ahead of UTC. Neither zone observes daylight saving time, so this difference is the same all year.
Does UTC or JST observe daylight saving time?+
Coordinated Universal Time stays on UTC+0 all year — no daylight saving time. Japan Standard Time stays on UTC+9 all year — no daylight saving time.
What is the best time for a meeting between UTC and JST?+
The practical window is early morning in the global reference timeline, which lands in the late afternoon or evening in Japan. The converter above highlights office hours in green for both zones, so you can slide to a time that works for everyone.
How do I share a UTC to JST meeting time by email?+
Pick a time in the converter, log it to the Smart Clipboard, and copy it as bullets, a formatted table, or a one-line question — with both UTC and JST times spelled out so nobody has to do the math.