What is the time difference between PST and JST?

Japan Standard Time (JST) is 16 hours ahead of Pacific Standard Time (PST). PST uses a UTC offset of UTC-7, while JST uses UTC+9. For example, when it's 9:00 AM in PST, it's 1:00 AM in JST. 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 PST to JST?

To convert PST to JST, add 16 hours to the PST time. For example, 9:00 AM PST is 1:00 AM JST, and 5:00 PM PST is 9:00 AM JST. 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 JST when it's noon in PST?

When it's 12:00 PM (noon) in PST, it's 4:00 AM in JST. This is because JST is 16 hours ahead of PST. Similarly, when it's 6:00 PM in PST, it's 10:00 AM in JST. 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 ahead is JST from PST?

JST is 16 hours ahead of PST. This means when it's 9:00 AM in PST, it's 1:00 AM in JST, and when it's midnight in PST, it's 4:00 PM in JST. 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 JST ahead or behind PST?

JST is ahead of PST by 16 hours. Clocks in JST show a later time than PST, meaning the day starts earlier in JST relative to PST. For example, when it's morning in PST, it's already afternoon or evening in JST. This gap may change by one hour during DST transitions.

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 PST to JST conversions.

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 to JST more predictable. Countries and regions in this timezone keep their clocks unchanged regardless of the season.

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

The best time for a call between PST and JST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in JST during their work day, call between 5:00 PM and 1:00 AM your PST time. Avoid calling too early or late, as the 16 hours difference means your evening could be their late night. 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 PST and JST 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 PST and JST ever have the same time?

No, PST and JST 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.

PST to JST Converter

Convert Pacific Standard Time to Japan 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

Pacific Standard Time

10:23 PM

Saturday, October 24, 2026

PDT (UTC-07:00)

Japan Standard Time

2:23 PM

Sunday, October 25, 2026

JST (UTC+09:00)

Difference: +16 hours

PDT DST: Yes (PDT)

JST DST: No

24-Hour Overview

PDT — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

JST — 24-hour overview

4p4p

7p7p

10p10p

11p

12a

1a1a

4a4a

7a7a

10a10a

11a

12p

1p1p

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

JST to PST 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

PST Cities

Los Angeles San Diego San Francisco Seattle Las Vegas

JST Cities

Tokyo Osaka Fukuoka

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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