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JST: Japan Standard Time

JST is UTC+9: 9 hours ahead of Coordinated Universal Time. All of Japan, all year. Japan has not observed daylight saving since 1951.

Current time at UTC+9
JST11:08 PMThu, Oct 22
UTC2:08 PMThu, Oct 22

Calculated from your device clock. Shown at the fixed JST offset, whether or not a particular place is using it today.

Is JST in use right now?

Yes. Tokyo uses JST all year.

Full name
Japan Standard Time
UTC offset
UTC+9ISO 8601: +09:00
Type
Standard time, used all year
Summer counterpart
None
Example IANA zone
Asia/Tokyo

Where and when JST is used in 2026

Calculated for the cities in our directory from the IANA time zone database. Dates are local; each change happens in the early morning of the date shown.

CityIANA zoneOn JST (UTC+9)
TokyoAsia/TokyoAll of 2026

JST conversion table

Every hour of the day in JST, converted at fixed offsets. To convert local time in a specific city, use the city instead: its offset may change with the date.

JST (UTC+9)UTC (UTC+0)GMT (UTC+0)EST (UTC−5)PST (UTC−8)CET (UTC+1)IST (UTC+5:30)
12:00 AM3:00 PMprevious day3:00 PMprevious day10:00 AMprevious day7:00 AMprevious day4:00 PMprevious day8:30 PMprevious day
1:00 AM4:00 PMprevious day4:00 PMprevious day11:00 AMprevious day8:00 AMprevious day5:00 PMprevious day9:30 PMprevious day
2:00 AM5:00 PMprevious day5:00 PMprevious day12:00 PMprevious day9:00 AMprevious day6:00 PMprevious day10:30 PMprevious day
3:00 AM6:00 PMprevious day6:00 PMprevious day1:00 PMprevious day10:00 AMprevious day7:00 PMprevious day11:30 PMprevious day
4:00 AM7:00 PMprevious day7:00 PMprevious day2:00 PMprevious day11:00 AMprevious day8:00 PMprevious day12:30 AM
5:00 AM8:00 PMprevious day8:00 PMprevious day3:00 PMprevious day12:00 PMprevious day9:00 PMprevious day1:30 AM
6:00 AM9:00 PMprevious day9:00 PMprevious day4:00 PMprevious day1:00 PMprevious day10:00 PMprevious day2:30 AM
7:00 AM10:00 PMprevious day10:00 PMprevious day5:00 PMprevious day2:00 PMprevious day11:00 PMprevious day3:30 AM
8:00 AM11:00 PMprevious day11:00 PMprevious day6:00 PMprevious day3:00 PMprevious day12:00 AM4:30 AM
9:00 AM12:00 AM12:00 AM7:00 PMprevious day4:00 PMprevious day1:00 AM5:30 AM
10:00 AM1:00 AM1:00 AM8:00 PMprevious day5:00 PMprevious day2:00 AM6:30 AM
11:00 AM2:00 AM2:00 AM9:00 PMprevious day6:00 PMprevious day3:00 AM7:30 AM
12:00 PM3:00 AM3:00 AM10:00 PMprevious day7:00 PMprevious day4:00 AM8:30 AM
1:00 PM4:00 AM4:00 AM11:00 PMprevious day8:00 PMprevious day5:00 AM9:30 AM
2:00 PM5:00 AM5:00 AM12:00 AM9:00 PMprevious day6:00 AM10:30 AM
3:00 PM6:00 AM6:00 AM1:00 AM10:00 PMprevious day7:00 AM11:30 AM
4:00 PM7:00 AM7:00 AM2:00 AM11:00 PMprevious day8:00 AM12:30 PM
5:00 PM8:00 AM8:00 AM3:00 AM12:00 AM9:00 AM1:30 PM
6:00 PM9:00 AM9:00 AM4:00 AM1:00 AM10:00 AM2:30 PM
7:00 PM10:00 AM10:00 AM5:00 AM2:00 AM11:00 AM3:30 PM
8:00 PM11:00 AM11:00 AM6:00 AM3:00 AM12:00 PM4:30 PM
9:00 PM12:00 PM12:00 PM7:00 AM4:00 AM1:00 PM5:30 PM
10:00 PM1:00 PM1:00 PM8:00 AM5:00 AM2:00 PM6:30 PM
11:00 PM2:00 PM2:00 PM9:00 AM6:00 AM3:00 PM7:30 PM

Highlighted rows: 9 am – 5 pm in JST.

What to know about JST

JST is UTC+9, the same clock as Korea Standard Time (Seoul) and Eastern Indonesia.

With no daylight saving in Japan, the Tokyo–London difference alternates between eight and nine hours only because the UK changes its clocks.

Read more about why abbreviations need context and how daylight saving changes offsets.

Popular conversions

Local time in cities that use JST

Other time zone abbreviations

All time zones →
UTCCoordinated Universal TimeUTC+0GMTGreenwich Mean TimeUTC+0BSTBritish Summer TimeUTC+1CETCentral European TimeUTC+1CESTCentral European Summer TimeUTC+2ESTEastern Standard TimeUTC−5EDTEastern Daylight TimeUTC−4CSTCentral Standard Time (North America)UTC−6CDTCentral Daylight TimeUTC−5MSTMountain Standard TimeUTC−7PSTPacific Standard TimeUTC−8PDTPacific Daylight TimeUTC−7ISTIndia Standard TimeUTC+5:30SGTSingapore TimeUTC+8GSTGulf Standard TimeUTC+4AESTAustralian Eastern Standard TimeUTC+10AEDTAustralian Eastern Daylight TimeUTC+11