JST — Japan Standard Time
See how JST (UTC+9) is used in Japan, check the current offset, and compare it with other time zones for scheduling.
Meaning and Usage
JST stands for Japan Standard Time and is the standard time used across Japan. It stays fixed at UTC+9 and applies nationwide.
No DST Changes
Japan Standard Time does not observe daylight saving time, so JST remains UTC+9 throughout the year. Our data tracks this automatically using the IANA timezone database.
Convert Other Time Zones
Compare JST with other zones using the visual time grid and hour-by-hour tables. Export meeting times with ICS download or send them to Google Calendar and Gmail.
How to Convert JST to Other Time Zones
Open the JST converter page: Visit
https://www.xconvert.com/time-converter/jst-time-zoneto open the visual comparison grid with Japan Standard Time pre-loaded. This view is useful when you are planning a call with colleagues in Tokyo, coordinating support coverage in Osaka, or checking a delivery handoff that involves teams working on Japan time.Add comparison cities: Click + Add City and search for cities you want to compare against JST, such as Tokyo alongside other locations your team works with regularly. This is especially helpful for remote coordination, client meetings, and travel planning when you need to line up Japan business hours with other offices on the same timeline.
Select a meeting window on the grid: Click Select to enter selection mode, then drag across the JST row to highlight a time range in purple; use the left and right handles to resize it or drag the center to move it. This makes it easy to test whether a work-hour slot in Japan overlaps with another location before you schedule a video call, shift handoff, or interview.
Export and share the result: Once a range is selected, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. These options are practical when you want to send a confirmed JST meeting window to a distributed team so each person can save or open the same time block in their preferred calendar workflow.
About Japan Standard Time (JST)
Japan Standard Time, abbreviated JST, is the standard time used in Japan. Its exact offset is UTC+9, which means local time in JST is nine hours ahead of Coordinated Universal Time.
JST is used nationally across Japan, including major cities such as Nagoya, Osaka, Sapporo, Tokyo, and Yokohama. For business scheduling, this matters because a single national standard keeps meetings, transport planning, and operational coordination aligned across the country without regional time differences.
Japan Standard Time does not observe daylight saving time and has no counterpart. That means JST remains the same throughout the year, which simplifies recurring meeting schedules for companies, travelers, and international teams that need a stable reference point.
Other abbreviations that share the same UTC+9 offset include AWDT, CHOST, I, IRKST, KST, PWT, TLT, ULAST, WIT, and YAKT. Matching offsets can be useful when comparing fixed-hour differences, although the cities and countries using those abbreviations may follow different local rules.
JST and Daylight Saving Time
JST does not switch for daylight saving time. It stays on UTC+9 all year and does not move forward or backward seasonally.
Because Japan Standard Time has no daylight saving counterpart, there is no summer version or winter version to account for when planning recurring events. This is especially useful for international coordination because the Japan side of the schedule stays fixed even when other countries change their clocks.
There are no daylight saving transition dates for JST in the current year because Japan does not observe DST. For practical scheduling, that means any seasonal time difference changes come from the other location, not from Japan.
Frequently Asked Questions
What does JST stand for?
JST stands for Japan Standard Time. It is the standard time designation used in Japan and applies across major cities including Tokyo, Osaka, Nagoya, Sapporo, and Yokohama.
Is JST the same as GMT?
JST is not the same as GMT. JST is UTC+9, while GMT refers to the zero-offset standard centered on Greenwich, so Japan Standard Time is nine hours ahead of that baseline.
Which cities use JST?
JST is used in major Japanese cities including Nagoya, Osaka, Sapporo, Tokyo, and Yokohama. Since Japan uses one national standard time, these cities follow the same clock year-round.
What is the UTC offset for JST?
The UTC offset for JST is UTC+9. This fixed offset does not change seasonally, which makes JST straightforward to use for recurring meetings and long-term planning.
When does JST change for daylight saving time?
JST does not change for daylight saving time at any point in the year. Japan does not observe DST, so there are no clock changes, no transition dates, and no alternate seasonal time label.
Does JST have a daylight saving counterpart?
No, JST has no counterpart. Unlike time zones that alternate between standard time and daylight time, Japan Standard Time remains JST throughout the entire year.
Which country uses JST?
Japan uses JST. This single national time standard supports consistent scheduling across the country’s major urban centers, including Tokyo, Osaka, Nagoya, Sapporo, and Yokohama.
Are there other time zone abbreviations with the same offset as JST?
Yes. Other abbreviations that share the UTC+9 offset include AWDT, CHOST, I, IRKST, KST, PWT, TLT, ULAST, WIT, and YAKT. While the offset matches, those abbreviations are separate labels and may be used in different places or contexts.