JST — Japan Standard Time
See how JST (UTC+9) is used in Japan, check current time, and compare it with other time zones for scheduling.
Countries: Japan
How to Convert JST to Other Time Zones
Open the JST converter page: Visit https://www.xconvert.com/time-converter/jst-time-zone to open the visual comparison grid with Japan Standard Time (JST) pre-loaded. This page is useful when you are scheduling a call with a client in Tokyo, coordinating a release with an engineering team in Osaka, or checking whether Nagoya business hours overlap with partners in North America or Europe.
Add comparison cities: Click “+ Add City” and search for cities such as New York, London, and Singapore to compare JST against major finance, technology, and logistics hubs. This is especially practical for companies working with the Tokyo Stock Exchange, global manufacturers with suppliers across Asia, or remote teams that need to line up Japan office hours with US and UK stakeholders.
Select a time range on the grid: Click “Select” to enter selection mode, then drag across the JST row from 9:00 AM to 11:00 AM JST to highlight a meeting window in purple. That selection shows, for example, that 9:00–11:00 AM in Japan is 8:00–10:00 PM in New York the previous day during Eastern Daylight Time, 1:00–3:00 AM in London during GMT, or 2:00–4:00 AM during British Summer Time, helping you quickly see whether a Tokyo morning meeting is realistic for overseas participants.
Export or share the result: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is useful when sending a confirmed JST meeting slot to a distributed team, adding a supplier call directly to Google Calendar, or sharing a link so colleagues in different countries see the same time block automatically in their own local time.
About Japan Standard Time (JST)
JST stands for Japan Standard Time, the official civil time used across Japan. Its exact offset is UTC+09:00, which means Japan is 9 hours ahead of Coordinated Universal Time (UTC) and 9 hours ahead of GMT when GMT is used as a fixed UTC+0 reference.
Japan Standard Time is used nationwide in Japan, including major cities such as Tokyo, Yokohama, Osaka, Nagoya, and Sapporo. Japan stretches across a long north-south distance, but the entire country uses a single time zone, which simplifies domestic rail schedules, airline timetables, television broadcasting, and national business operations.
Because JST is fixed at UTC+9 all year, there is no seasonal clock adjustment to account for when converting times. In practical terms, when it is 12:00 noon UTC, it is 9:00 PM JST in Tokyo; when it is 9:00 AM JST, it is 12:00 AM UTC the same day.
JST is important in global business because Japan is one of the world’s largest economies, with major activity in automotive manufacturing, electronics, finance, shipping, gaming, and advanced industrial technology. Firms operating with companies such as Toyota, Sony, Mitsubishi, SoftBank, Nintendo, and major Tokyo-based financial institutions often need precise JST conversions for earnings calls, supply-chain coordination, and software deployment windows.
JST and Daylight Saving Time
Japan Standard Time does not observe Daylight Saving Time. The DST status for JST is false, which means clocks in Japan do not switch forward in spring or back in autumn and the time zone does not change to any daylight variant.
For the current year, 2026, there are no DST transition dates for JST. There is no spring change, no autumn rollback, and no alternate abbreviation such as a “summer time” version of JST currently used in Japan.
This fixed offset makes JST easier to work with than time zones that change seasonally. The complexity usually comes from the other side of the conversion: for example, JST is 14 hours ahead of New York during Eastern Standard Time, but 13 hours ahead during Eastern Daylight Time; it is 9 hours ahead of London during GMT, but 8 hours ahead during British Summer Time.
That difference matters for real scheduling. A 6:00 PM JST call is 4:00 AM in New York during EST or 5:00 AM during EDT, while the same 6:00 PM JST slot is 9:00 AM in London during GMT or 10:00 AM during BST. If you work with Japan from Europe or North America, the JST side stays constant while your local offset may shift once or twice each year.
Frequently Asked Questions
What does JST stand for?
JST stands for Japan Standard Time. It is the official standard time used throughout Japan, including major metropolitan areas such as Tokyo, Osaka, Yokohama, Nagoya, and Sapporo, and it remains fixed at UTC+09:00 year-round.
Is JST the same as GMT?
No, JST is not the same as GMT. GMT is UTC+0, while JST is UTC+9, so Japan Standard Time is 9 hours ahead of Greenwich Mean Time; for example, when it is 8:00 AM GMT, it is 5:00 PM JST the same day.
Which cities use JST?
JST is used across all of Japan, including major cities such as Tokyo, Yokohama, Osaka, Nagoya, and Sapporo. Because Japan uses one national time zone, a train departure in Tokyo, a business meeting in Osaka, and a flight schedule in Sapporo all follow the same JST clock.
What is the UTC offset for JST?
The UTC offset for JST is UTC+09:00. This means you add 9 hours to UTC to get Japan Standard Time, so 3:00 PM UTC converts to 12:00 AM JST on the next calendar day.
When does JST change?
JST does not change during the year because Japan does not currently observe Daylight Saving Time. In 2026, there are no official DST start or end dates, so the country stays on UTC+9 from January through December.
Is JST the same as Tokyo time?
Yes, in everyday use Tokyo time is JST because Tokyo follows Japan Standard Time like the rest of the country. Since Japan has a single national time zone, the local time in Tokyo, Osaka, Yokohama, Nagoya, and Sapporo is the same at any given moment.
How far ahead is JST from UTC?
JST is 9 hours ahead of UTC. If it is 12:00 AM UTC, it is 9:00 AM JST in Japan, which is why Tokyo business hours often overlap better with Asia-Pacific markets than with Europe or the Americas.
Does Japan ever use daylight saving time?
At present, Japan does not use daylight saving time, so JST remains unchanged all year. That consistency helps with domestic transport and business scheduling, although international teams still need to account for DST changes in places like the United States, Canada, the United Kingdom, and Europe when planning meetings with Japan.