KST vs PST Time Difference
See the current hour gap between Korea Standard Time and Pacific Standard Time, including DST effects and the best times to schedule calls.
Current Hour Gap
Compare Korea Standard Time (UTC+9) with Pacific Standard Time (UTC-8) at a glance. The standard time difference is 17 hours, so next-day scheduling is often required.
DST Impact Tracking
KST does not observe daylight saving time, while Pacific Time shifts between PST and PDT. This page tracks those changes automatically using the IANA timezone database.
Best Meeting Hours
Use the visual comparison grid and hour-by-hour table to find workable overlap times between Korea and the U.S. West Coast. Export meetings with ICS download or send to Google Calendar and Gmail.
How to Find the Time Difference Between KST and PST
Open the KST vs PST comparison page: Go to https://www.xconvert.com/time-converter/kst-vs-pst to load a visual grid with KST and PST already shown as separate rows. This view is useful when you are scheduling a call between Seoul and the U.S. West Coast, coordinating a game launch across Korea and California, or planning support coverage between teams working in East Asia and North America.
Add comparison cities with the + Add City button: Click + Add City and search for cities that matter to your workflow, such as Seoul for South Korea operations, Los Angeles for media and technology teams, or Vancouver for Canadian Pacific business hours. This is especially practical for companies handling semiconductor supply chains, entertainment releases, ecommerce operations, or remote engineering handoffs that involve Korea and Pacific-facing offices.
Use Select mode and drag across the grid to highlight a meeting window: Click Select so the grid switches from scroll mode to selection mode, then drag across the KST row to mark a time block in purple; you can resize it with the left and right handles or move the whole range by dragging the center. For example, if you drag from 9:00 KST to 12:00 KST, the PST row shows 16:00 PST to 19:00 PST on the previous day, which immediately tells you that a Seoul morning meeting lands in the late afternoon and early evening for Pacific teams.
Export the selected time range for your team: Once a range is highlighted, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is helpful when a Korea-based product manager needs to send a launch review slot to partners in California, because the shared event preserves the local time interpretation for everyone viewing it from KST or PST.
KST vs PST Offset Explained
KST is UTC+9 and PST is UTC-8, so PST is 17 hours behind KST. In practical terms, when it is 9:00 in KST, it is 16:00 in PST on the previous day, and when it is 15:00 in KST, it is 22:00 in PST on the previous day. This large gap means most same-day business overlap is limited, and many meetings between Korea and the Pacific region happen in one side’s morning and the other side’s late afternoon or evening.
KST does not observe daylight saving time, which makes Korea’s clock stable throughout the year across both South Korea and North Korea. PST is specifically a standard-time abbreviation, and its daylight-saving counterpart is PDT, so the label used in Pacific regions changes seasonally. That matters for teams booking recurring meetings, because a meeting set during a PST period may appear under a different Pacific abbreviation during the part of the year when daylight saving time is in effect.
KST is used in North Korea and South Korea, while PST is associated with parts of Canada, Mexico, the Philippines, and the United States. For real-world coordination, this affects industries such as Korean electronics manufacturing, gaming, and export logistics working with Pacific-based film studios, cloud infrastructure teams, and retail operations. A Seoul operations team reviewing overnight tickets may find that 18:00 KST equals 1:00 PST, which can work for early Pacific-shift support but is too early for a standard office meeting.
The conversion examples show how quickly the calendar date shifts between these two time standards. 12:00 KST = 19:00 PST on the previous day, so a noon update in Korea reaches Pacific participants during the prior evening, while 18:00 KST = 1:00 PST, pushing the meeting into very early Pacific hours. This previous-day effect is the main scheduling challenge when planning live collaboration between KST and PST.
Frequently Asked Questions
What is the time difference between KST and PST?
KST and PST are separated by 17 hours, with PST 17 hours behind KST. That means a workday in Korea often maps to the previous calendar day in Pacific time, which is why date awareness is just as important as clock awareness when booking calls.
Is KST ahead of PST or behind PST?
KST is ahead of PST, because KST is UTC+9 while PST is UTC-8. A simple example is 9:00 KST = 16:00 PST on the previous day, so a Seoul morning meeting reaches Pacific participants late the day before.
Why does KST to PST often show the previous day?
The date changes because the gap is large enough that Pacific time falls far earlier on the clock than Korea time. For example, 12:00 KST = 19:00 PST on the previous day and 15:00 KST = 22:00 PST on the previous day, so midday and afternoon in Korea still belong to the prior evening in PST.
Does KST use daylight saving time?
KST does not observe DST, so Korea Standard Time stays fixed all year. This consistency is useful for recurring schedules with Korean teams, because the Korea side does not shift seasonally even when Pacific regions change between standard and daylight time labels.
Is PST the same as Pacific Time all year?
No. PST is a standard-time abbreviation, and its daylight-saving counterpart is PDT. If you are coordinating with offices in places like the western United States or Canada, it is important to confirm whether the Pacific side is currently using PST or PDT before sending a recurring invite.
Which countries use KST and which countries use PST?
KST is used in North Korea and South Korea. PST is associated with Canada, Mexico, the Philippines, and the United States, which makes this comparison relevant for cross-border work involving Korean manufacturers, Pacific media companies, software teams, and international customer support operations.
What are the best meeting times between KST and PST?
The best window depends on which side can take an early or late meeting, because the 17-hour gap leaves limited comfortable overlap. Many teams test options visually on the grid using examples like 9:00 KST = 16:00 PST (previous day) or 18:00 KST = 1:00 PST to decide whether the burden should fall on Korea’s evening or the Pacific side’s very early morning.
How do I convert KST to PST quickly?
Use the visual comparison grid to drag a block on the KST row and read the matching time directly on the PST row. If you need quick reference points, 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.