What is the time difference between KST and PST?

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

To convert KST to PST, subtract 16 hours from the KST time. For example, 9:00 AM KST is 5:00 PM PST, and 5:00 PM KST 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 KST?

When it's 12:00 PM (noon) in KST, it's 8:00 PM in PST. This is because PST is 16 hours behind KST. Similarly, when it's 6:00 PM in KST, 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 KST?

PST is 16 hours behind KST. This means when it's 9:00 AM in KST, it's 5:00 PM in PST, and when it's midnight in KST, 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 KST?

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

Does KST observe daylight saving time?

No, Korea Standard Time does not observe daylight saving time. The UTC offset of UTC+9 remains the same year-round, making time conversions from KST 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 KST to PST conversions.

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

The best time for a call between KST 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 KST 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 KST 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 KST and PST ever have the same time?

No, KST and PST never show the same time because their base UTC offsets are different. However, because PST observes daylight saving time and KST 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.

KST to PST Converter

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

Timezone Details

Korea Standard Time

7:57 AM

Saturday, April 4, 2026

KST (UTC+09:00)

Pacific Standard Time

3:57 PM

Friday, April 3, 2026

PDT (UTC-07:00)

Difference: -16 hours

KST DST: No

PDT DST: Yes (PDT)

24-Hour Overview

KST — 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 KST EST to PST PST to EST PST to GMT GMT to PST PST to IST IST to PST PST to JST JST to PST

Cities in These Timezones

KST Cities

Seoul Busan

PST Cities

Los Angeles San Diego San Francisco Seattle Las Vegas

More Tools

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

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

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