What is the time difference between JST and PST?

Pacific Standard Time (PST) is 16 hours behind Japan Standard Time (JST). JST uses a UTC offset of UTC+9, while PST uses UTC-7. For example, when it's 9:00 AM in JST, it's 5:00 PM in PST. Note that this difference may shift by one hour during daylight saving time transitions if PST observes DST. Use the conversion table above to see the exact time for each hour of the day.

How do I convert JST to PST?

To convert JST to PST, subtract 16 hours from the JST time. For example, 9:00 AM JST is 5:00 PM PST, and 5:00 PM JST is 1:00 AM PST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in PST when it's noon in JST?

When it's 12:00 PM (noon) in JST, it's 8:00 PM in PST. This is because PST is 16 hours behind JST. Similarly, when it's 6:00 PM in JST, it's 2:00 AM in PST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours behind is PST from JST?

PST is 16 hours behind JST. This means when it's 9:00 AM in JST, it's 5:00 PM in PST, and when it's midnight in JST, it's 8:00 AM in PST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is PST ahead or behind JST?

PST is behind JST by 16 hours. Clocks in PST show an earlier time than JST, meaning the day starts later in PST relative to JST. For example, when it's noon in JST, it's still 8:00 PM in PST. This gap may change by one hour during DST transitions.

Does JST observe daylight saving time?

No, Japan Standard Time does not observe daylight saving time. The UTC offset of UTC+9 remains the same year-round, making time conversions from JST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

Does PST observe daylight saving time?

Yes, Pacific Standard Time observes daylight saving time. During DST, the abbreviation changes to PDT and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard PST time. This means the UTC offset for PST shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your JST to PST conversions.

What is the best time to call from JST to PST?

The best time for a call between JST and PST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in PST during their work day, call between 1:00 AM and 9:00 AM your JST time. Avoid calling too early or late, as the 16 hours difference means your evening could be their early morning. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in PST?

Daylight saving time transitions vary by year and region. Pacific Standard Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between JST and PST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do JST and PST ever have the same time?

No, JST and PST never show the same time because their base UTC offsets are different. However, because PST observes daylight saving time and JST does not, the time difference between them changes by one hour during DST transitions. This means the gap narrows or widens depending on the season, but the two clocks never align. Always verify the current offset around DST transition dates to avoid scheduling errors.

JST to PST Converter

Convert Japan Standard Time to Pacific Standard Time. See the hour-by-hour conversion table below.

Upcoming DST Change

Pacific Time (PDT) will fall back on November 1. Clocks will shift by 1 hour (PDT → PST).

View all DST changes

Timezone Details

Japan Standard Time

2:23 PM

Sunday, October 25, 2026

JST (UTC+09:00)

Pacific Standard Time

10:23 PM

Saturday, October 24, 2026

PDT (UTC-07:00)

Difference: -16 hours

JST DST: No

PDT DST: Yes (PDT)

24-Hour Overview

JST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

PDT — 24-hour overview

8a8a

10a

11a11a

12p

2p2p

5p5p

8p8p

10p

11p11p

12a

2a2a

5a5a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

PST to JST EST to PST PST to EST EST to JST JST to EST PST to GMT GMT to PST PST to IST IST to PST

Cities in These Timezones

JST Cities

Tokyo Osaka Fukuoka

PST Cities

Los Angeles San Diego San Francisco Seattle Las Vegas

More Tools

Compare JST & PST Plan a Meeting (JST & PST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Japan Standard Time on Wikipedia Pacific Standard Time on Wikipedia IANA Time Zone Database