Compare KST vs PST
See the live time difference between Korea Standard Time and Pacific Standard Time, including DST changes and overlap hours.
KST to PST Difference
Korea Standard Time is UTC+9 and Pacific Standard Time is UTC-8, a standard 17-hour gap. View the current hour-by-hour difference between both time zones.
Track DST Time Shifts
Korea Standard Time does not observe DST, while Pacific Standard Time switches with Pacific Daylight Time seasonally. The page updates automatically for DST using the IANA timezone database.
Find Best Meeting Hours
Use the visual comparison grid to spot overlapping business hours between Korea Standard Time and Pacific Standard Time. Export selected times with ICS download or share via Google Calendar and Gmail.
KST (Korea Standard Time, UTC+9) is 17 hours ahead of PST (Pacific Standard Time, UTC-8), so a workday in Korea often overlaps with the previous calendar day on the U.S. and Canadian Pacific coast.
Looking for Pitcairn Standard Time? See /time-converter/pst-pitcairn-time-zone.
How to Find the Time Difference Between KST and PST
Open the KST vs PST converter: Go to
https://www.xconvert.com/time-converter/kst-vs-pstto see Korea Standard Time and Pacific Standard Time arranged on a visual comparison grid. This view is useful when you are planning a supplier call with South Korea, coordinating a gaming or media team across Seoul and Los Angeles, or checking whether a Korea-based support shift lands on the previous day in North America.Add comparison cities with + Add City: Click + Add City and search for places that matter to your schedule, such as Seoul for South Korea operations and Los Angeles, Vancouver, or Tijuana for Pacific Standard Time business coverage across the United States, Canada, and Mexico. This is especially practical for electronics manufacturing, entertainment, ecommerce, and customer support teams that need to line up Korea-based daytime work with Pacific coast offices.
Select a meeting window on the grid: Click Select if needed, then drag across the colored timeline to highlight a range in purple, and adjust it with the left or right handles or move it by dragging the center. For example, if you drag from 9:00 KST to 12:00 KST, the grid will show 16:00 PST to 19:00 PST on the previous day, which helps confirm that a Korea morning meeting reaches Pacific teams in the late afternoon and evening the day before.
Export the selected time range: After selecting a slot, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is useful when a Seoul product team wants to send a confirmed handoff window to colleagues on Pacific Standard Time so everyone receives the same meeting block in their own calendar system without retyping times.
KST vs PST Offset Explained
Korea Standard Time is UTC+9 and Pacific Standard Time is UTC-8. The fixed difference on this page is 17 hours, which means PST is 17 hours behind KST, and equivalently, KST is 17 hours ahead of PST. In practical scheduling terms, when it is 9:00 KST, it is 16:00 PST on the previous day; when it is 12:00 KST, it is 19:00 PST on the previous day.
This large gap matters for cross-border work because normal office hours in Korea often map to the prior afternoon or evening in Pacific Standard Time. For example, 15:00 KST = 22:00 PST on the previous day, so a mid-afternoon review in Korea lands late at night for Pacific teams. If the Korea side pushes later into the evening, 18:00 KST = 1:00 PST, which moves the Pacific side into after-midnight coverage.
Korea Standard Time does not observe DST, so its offset remains stable at UTC+9 throughout the year. Pacific Standard Time is specifically the standard-time form of the Pacific zone, and its daylight-saving counterpart is PDT. That distinction matters because anyone booking recurring calls, release windows, or customer support handoffs must make sure they are comparing Korea Standard Time with Pacific Standard Time, not with PDT during another part of the year.
KST is used in North Korea and South Korea, while Pacific Standard Time is used in parts of Canada, Mexico, and the United States. That makes this comparison common for semiconductor supply chains, consumer electronics sourcing, console and mobile gaming operations, and media distribution, where teams in Korea need to coordinate with Pacific coast partners across multiple countries using the same standard-time abbreviation.
Frequently Asked Questions
What is the time difference between KST and Pacific Standard Time?
Korea Standard Time is 17 hours ahead of Pacific Standard Time. Put another way, Pacific Standard Time is 17 hours behind Korea Standard Time, so a daytime slot in Korea usually appears on the previous day in PST. For example, 12:00 KST = 19:00 PST on the previous day.
Is KST always ahead of Pacific Standard Time?
Yes. On this page, KST is always 17 hours ahead of Pacific Standard Time, because KST is UTC+9 and PST is UTC-8. That means even a standard morning start in Korea, such as 9:00 KST, corresponds to 16:00 PST on the previous day, which is important when booking calls across date boundaries.
Does Korea Standard Time use daylight saving time?
No. Korea Standard Time does not observe DST, so it stays at UTC+9 year-round. This makes Korea-side scheduling more predictable for recurring operations such as vendor check-ins, game launches, and engineering handoffs, because the Korea offset itself does not change.
Is PST the same as PDT?
No. Pacific Standard Time is the standard-time abbreviation, while PDT is its daylight-saving counterpart. This matters when reading meeting invites or coordinating support shifts, because a Korea team comparing against Pacific Standard Time should confirm that the other side is actually using PST and not PDT for that date.
What are some quick KST to PST conversion examples?
Several common examples show how strongly the calendar shifts between these zones. 9:00 KST = 16:00 PST (previous day), 12:00 KST = 19:00 PST (previous day), 15:00 KST = 22:00 PST (previous day), and 18:00 KST = 1:00 PST. These examples are useful for deciding whether a Korea-based morning or afternoon meeting is realistic for Pacific coast participants.
Which countries use KST and Pacific Standard Time?
Korea Standard Time is used in North Korea and South Korea. Pacific Standard Time is used in parts of Canada, Mexico, and the United States, so this comparison is relevant for cross-Pacific business, travel planning, and remote collaboration involving Korean teams and North American west-coast operations.
Is PST Pacific Standard Time or Pitcairn Standard Time?
On this page, PST means Pacific Standard Time (UTC-8). PST can also mean Pitcairn Standard Time (UTC-8), which is covered separately at /time-converter/pst-pitcairn-time-zone. If you are comparing Korea with west-coast North America, you want the Pacific Standard Time meaning used here.