Convert PST to JST
See the 17-hour time difference between Pacific Standard Time and Japan Standard Time with a live converter, comparison table, and meeting planner.
How to Convert PST to JST
Open the PST to JST converter: Go to https://www.xconvert.com/time-converter/pst-to-jst-converter. The page loads with PST and JST already in the comparison grid, which is useful when you are scheduling a video call between a California-based team and colleagues, suppliers, or customers in Tokyo, Osaka, or Yokohama.
Add more cities for your workflow: Click + Add City and search for cities such as Los Angeles, San Francisco, or Seattle on the PST side, and Tokyo or Osaka on the JST side if you want city labels that match your actual business locations. You can also add New York or London if your company coordinates product, finance, or customer support across North America, Japan, and Europe in the same planning session.
Drag to select a meeting window: Click Select to enter selection mode, then drag across the colored hourly grid on the PST row to highlight a range, such as 4:00 PM to 6:00 PM PST. The purple selection immediately shows the matching JST time as 9:00 AM to 11:00 AM JST the next day, which is a practical overlap for engineering handoffs, game studio production reviews, or supplier calls between the US West Coast and Japan.
Export and 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 especially helpful when you need to send a confirmed cross-border meeting to a distributed team so everyone sees the correct local time automatically, whether they are joining from Silicon Valley, Tokyo, or another office.
Understanding the PST to JST Time Difference
Japan Standard Time (JST) is 17 hours ahead of Pacific Standard Time (PST). That means when it is 9:00 AM PST, it is 2:00 AM JST the next day. Because Japan is far ahead of the US West Coast, most JST times fall on the following calendar day compared with PST.
The PST offset is UTC-8, while JST is UTC+9, creating the standard 17-hour difference. For example, 6:00 PM PST = 11:00 AM JST the next day, and 11:00 PM PST = 4:00 PM JST the next day. This next-day shift matters for booking meetings, confirming flight arrivals, and planning support coverage between North America and Japan.
Daylight saving time changes the relationship for part of the year because PST is only used during standard time, while the US West Coast switches to Pacific Daylight Time (PDT, UTC-7) in warmer months. In the United States, DST starts on the second Sunday in March and ends on the first Sunday in November; in 2025, that is March 9, 2025 to November 2, 2025. During that period, the difference between the US Pacific time zone and JST becomes 16 hours, not 17.
Japan does not observe daylight saving time, so JST remains fixed at UTC+9 all year. This makes Japan easier to plan around, but it also means recurring meetings with teams in Los Angeles, San Diego, or San Francisco can shift by one hour in local Pacific time in March and November. If you are scheduling quarterly business reviews, software deployment windows, or live customer demos, it is important to check whether you mean PST specifically or the broader Pacific time zone including PDT.
Best Times for Calls and Meetings Between PST and JST
Because JST is 17 hours ahead of PST, normal office hours do not overlap well. A typical 9:00 AM to 5:00 PM PST workday converts to 2:00 AM to 10:00 AM JST the next day, while a standard 9:00 AM to 5:00 PM JST day converts to 4:00 PM to 12:00 AM PST on the previous day. In practice, the most workable shared window usually comes from late afternoon or evening in PST and the following morning in JST.
One of the best recurring meeting windows is 4:00 PM to 6:00 PM PST = 9:00 AM to 11:00 AM JST the next day. This is a strong option for product teams, semiconductor suppliers, gaming companies, and ecommerce operations that need Japan to join during the start of their business day while the US West Coast joins before ending theirs. Another useful slot is 5:00 PM to 7:00 PM PST = 10:00 AM to 12:00 PM JST, which works well for status updates, procurement calls, and agency reviews.
If the Japan side can meet later in the day, 3:00 PM to 5:00 PM PST = 8:00 AM to 10:00 AM JST the next day can also work, especially for internal standups or technical troubleshooting. For shorter executive check-ins, 6:00 PM PST = 11:00 AM JST is often easier than early-morning PST scheduling and still lands before lunch in Japan. These windows are commonly used by companies in technology, automotive supply chains, electronics manufacturing, and cross-Pacific logistics.
Times that usually do not work well include 9:00 AM PST = 2:00 AM JST, 12:00 PM PST = 5:00 AM JST, and 9:00 AM JST = 4:00 PM PST on the previous day if the US team has already finished work. If you are coordinating with Tokyo financial firms, Japanese manufacturing partners, or remote developers in Japan, it is usually better to anchor the meeting in Tokyo morning or California late afternoon rather than trying to force a midday overlap. For recurring meetings, many teams rotate inconvenience so one side is not always taking the late-evening or early-morning slot.
Frequently Asked Questions
What is the time difference between PST and JST?
JST is 17 hours ahead of PST. Since PST is UTC-8 and JST is UTC+9, the gap is large enough that Japan is usually on the next calendar day compared with the US West Coast.
For example, when it is 8:00 AM PST, it is 1:00 AM JST the next day. This date change is one of the most important details to watch when scheduling meetings, flight pickups, software releases, or customer support handoffs.
When is 9 AM PST in JST?
9:00 AM PST is 2:00 AM JST the next day. This is outside normal business hours in Japan, so it is generally not a good time for live meetings with teams in Tokyo, Osaka, or Nagoya.
If you need a Japan-friendly meeting, moving the US side later helps a lot. For instance, 4:00 PM PST becomes 9:00 AM JST the next day, which is much more practical for regular business communication.
Does the difference between PST and JST change during daylight saving time?
Yes, but only because the US Pacific time zone changes while Japan does not. PST itself stays at UTC-8, but during US daylight saving time the West Coast uses PDT (UTC-7), reducing the gap with JST from 17 hours to 16 hours.
In the United States, DST begins on the second Sunday in March and ends on the first Sunday in November. In 2025, that means the difference changes on March 9, 2025, and changes back on November 2, 2025, while Japan remains on JST (UTC+9) throughout the year.
What is the best meeting time between PST and JST?
The best regular meeting window is usually 4:00 PM to 6:00 PM PST, which converts to 9:00 AM to 11:00 AM JST the next day. This gives the US West Coast team a late-afternoon slot and the Japan team a normal morning slot, making it one of the least disruptive options.
Another strong choice is 5:00 PM to 7:00 PM PST = 10:00 AM to 12:00 PM JST. These windows are widely used for software development syncs, manufacturing coordination, account management calls, and cross-border project updates.
Why does JST fall on the next day compared with PST?
JST is so far ahead because Japan is at UTC+9, while PST is at UTC-8, creating a 17-hour lead. Once the gap exceeds 12 hours, many converted times naturally move into the next calendar day.
For example, 7:00 PM PST becomes 12:00 PM JST the next day, and 10:00 PM PST becomes 3:00 PM JST the next day. This is especially important for booking travel, setting webinar times, and confirming deadlines with Japanese partners.
Is Japan ever on daylight saving time?
No, Japan does not currently observe daylight saving time. JST remains fixed at UTC+9 in January, July, and every month in between, so the Japanese side of the conversion never changes seasonally.
This consistency is useful for long-term planning with Japanese offices, factories, or vendors. The only seasonal shift affecting PST-to-JST scheduling comes from the US Pacific side moving between PST and PDT.
How can I schedule a recurring call between California and Japan without confusion?
Use a visual converter and always confirm whether your recurring event is tied to PST only or to the broader Pacific time zone that includes PDT in summer. A meeting set for 5:00 PM PST in winter may need to be reviewed in March if your team intends to keep the same local California hour after DST begins.
On xconvert’s grid, you can pick the exact date from the date picker row and drag a meeting block to see the conversion instantly. Then export it as an ICS file, send it through Google Calendar or Gmail, or share a direct link so both the US and Japan teams receive the correct local time.