Convert PST to KST
See the 17-hour time difference from Pacific Standard Time to Korea Standard Time and find the best hours to schedule calls or meetings.
How to Convert PST to KST
Open the PST to KST converter: Go to https://www.xconvert.com/time-converter/pst-to-kst-converter. The page loads with Pacific Time and Korea Standard Time in a visual comparison grid, which is useful if you are scheduling a product review between a California team in Los Angeles or Seattle and partners in Seoul’s technology, gaming, or electronics sectors.
Add comparison cities relevant to your workflow: Click “+ Add City” and add cities such as San Francisco, Seoul, and optionally Tokyo or Singapore if your meetings involve broader Asia-Pacific operations. This is especially practical for companies working across West Coast software teams, Korean manufacturing suppliers, or e-commerce operations that coordinate with logistics hubs in East Asia.
Drag to select a realistic meeting window: Click “Select” to enter selection mode, then drag across the PST row to highlight a time range; for example, drag from 4 PM to 6 PM PST and the KST row will show 9 AM to 11 AM KST the next day during standard time. That visual shift is important for remote teams because a late-afternoon handoff in California often becomes the next morning’s working session in Seoul, which suits engineering support, design reviews, and supplier updates.
Export and share the converted time: After selecting the range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is useful when you need to send a confirmed cross-border meeting to a distributed team so everyone sees the event in local time automatically, whether it is a startup standup, a semiconductor vendor call, or a client presentation.
Understanding the PST to KST Time Difference
Korea Standard Time is 17 hours ahead of Pacific Standard Time. When it is 9:00 AM PST, it is 2:00 AM KST the next day; when it is 5:00 PM PST, it is 10:00 AM KST the next day. PST is UTC-8, while KST is UTC+9, and South Korea does not observe daylight saving time.
The difference changes when the U.S. West Coast switches between Pacific Standard Time (PST) and Pacific Daylight Time (PDT). During the U.S. daylight saving period, Pacific Time becomes UTC-7, so Korea is then 16 hours ahead instead of 17. In the United States, daylight saving time begins on the second Sunday in March and ends on the first Sunday in November, so the PST-to-KST gap is specifically 17 hours in roughly November through early March and 16 hours from March through early November.
This seasonal shift matters for real scheduling. A meeting that feels manageable in winter may move by one hour in Korea once California enters daylight saving time, which affects recurring calls between West Coast SaaS companies, Korean game studios, consumer electronics vendors, and international support teams. If you are booking flights or planning live collaboration between cities such as Los Angeles, San Francisco, San Diego, and Seoul, checking the exact date is important because the same nominal “Pacific time” can mean two different UTC offsets depending on the month.
Best Times for Calls and Meetings Between PST and KST
Because KST is far ahead of PST, the most practical overlap usually happens in late afternoon or evening in Pacific Time and the following morning in Korea. A strong recurring window is 4:00 PM to 6:00 PM PST = 9:00 AM to 11:00 AM KST the next day. This works well for engineering handoffs, account management calls, and supplier coordination because it stays within normal office hours in Seoul while remaining barely inside the workday for California teams.
Another useful option is 5:00 PM to 7:00 PM PST = 10:00 AM to 12:00 PM KST the next day. This is often better for Korean teams that need time to prepare before the call, especially in industries such as electronics manufacturing, gaming operations, and cross-border procurement. For U.S. participants, however, it may require a slightly extended workday, so it is more practical for planned meetings than for daily standups.
If your Pacific team starts very early, 6:00 AM to 8:00 AM PST = 11:00 PM to 1:00 AM KST is usually poor for Seoul-based participants and should generally be avoided except for urgent incidents. Likewise, 9:00 AM to 11:00 AM PST = 2:00 AM to 4:00 AM KST the next day, which is unsuitable for normal business calls. For recurring collaboration between North America and South Korea, the best balance is usually to anchor meetings in the Pacific late afternoon, because that maps to the next business morning in Korea.
During U.S. daylight saving time, these windows shift by one hour because Pacific Time changes to PDT. For example, 4:00 PM PDT = 8:00 AM KST the next day, while 5:00 PM PDT = 9:00 AM KST the next day. Teams that run weekly meetings should review recurring calendar events in March and November so Korean participants do not suddenly receive invites one hour earlier or later than expected.
Frequently Asked Questions
What is the time difference between PST and KST?
KST is 17 hours ahead of PST when the U.S. West Coast is on standard time. That means if it is 8:00 AM PST, it is 1:00 AM KST the next day, and if it is 6:00 PM PST, it is 11:00 AM KST the next day. The difference is large enough that most workable meetings happen in late-day Pacific hours and next-morning Korea hours.
When is 9 AM PST in KST?
9:00 AM PST is 2:00 AM KST the next day. This is outside normal business hours in South Korea, so it is usually not a good time for meetings unless you are coordinating emergency operations, overnight support, or a one-time deadline across teams.
Does the difference between PST and KST change during daylight saving time?
Yes. The difference is 17 hours during Pacific Standard Time and 16 hours when the U.S. observes Pacific Daylight Time. Since South Korea does not use daylight saving time, the change comes entirely from the U.S. side, typically from the second Sunday in March until the first Sunday in November.
What is the best meeting time between PST and KST?
The best recurring window is usually 4:00 PM to 6:00 PM PST = 9:00 AM to 11:00 AM KST the next day. That timing supports normal office hours in Seoul while allowing California-based teams to meet before the end of the business day, which is common for software delivery, hardware sourcing, and regional operations reviews.
How do I use the PST to KST converter on https://www.xconvert.com?
Open the page and view the two-row time grid showing Pacific Time and Korea Standard Time side by side. Click “Select”, drag across the PST timeline to highlight a meeting window, and watch the corresponding KST time appear visually on the Seoul row; then export it via ICS, Google Calendar, Gmail, Copy to clipboard, or Share link to distribute the final schedule.
Why does my recurring PST to KST meeting shift by one hour in March or November?
Your meeting shifts because the U.S. Pacific zone changes between UTC-8 and UTC-7, while Korea stays fixed at UTC+9 all year. If you created a recurring call without checking the DST transition dates, Korean participants may suddenly see the event one hour earlier or later after the U.S. switches clocks in March or November.
Is PST or late afternoon Pacific Time better for working with Seoul?
Late afternoon Pacific Time is usually the most practical because it converts to the next morning in Seoul. For example, 5:00 PM PST = 10:00 AM KST the next day, which is much more workable than 10:00 AM PST = 3:00 AM KST, making afternoon Pacific scheduling the standard choice for cross-Pacific business communication.