PST to Seoul
+17hPST
PSTSOURCESeoul
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
PST and KST on the World Map
The map below highlights the PST (Pacific Standard Time) and KST (Korea Standard Time) timezone regions across the globe.
PST – Pacific Standard Time
UTC-08:00Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.
- •Silicon Valley and the world's biggest tech companies operate on Pacific Time.
- •The Hollywood film industry runs on PST/PDT.
- •PST is 3 hours behind EST, creating a significant business hours gap.
- •Vancouver, Canada's third-largest city, uses PST.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
Comparing Time Zones: PST and Seoul
PST runs on Pacific Standard Time (PST) at UTC-08:00. Seoul runs on Korean Standard Time (KST) at UTC+09:00. That puts PST 17 hours ahead of Seoul — a difference of +17h at the current offsets.
In practice, when it is 9:00 AM in PST it is 2:00 AM in Seoul on the next day. Midnight in PST is 5:00 PM in Seoul. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PST to Seoul time conversion table
| PST (PST) | Seoul (KST) | Day |
|---|---|---|
| 12:00 AM | 5:00 PM | same day |
| 6:00 AM | 11:00 PM | same day |
| 7:00 AM | 12:00 AM | next day |
| 8:00 AM | 1:00 AM | next day |
| 9:00 AM | 2:00 AM | next day |
| 12:00 PM | 5:00 AM | next day |
| 3:00 PM | 8:00 AM | next day |
| 5:00 PM | 10:00 AM | next day |
| 6:00 PM | 11:00 AM | next day |
| 9:00 PM | 2:00 PM | next day |
Why people convert PST to Seoul time
- Scheduling a call from PST to Seoul: a 10:00 AM start in PST lands at 3:00 AM in Seoul the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +17h gap: PST and Seoul have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Seoul is 2:00 AM in PST.
- Keeping family and friends in sync: knowing that 8:00 PM in PST is 1:00 PM in Seoul makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM PST" is unambiguous; "3 PM" across a +17h gap is not.
- With a +17h gap there is no shared 9-to-5 window, so alternate the early start: one week PST takes the early slot, the next week Seoul does.
About PST (Pacific Standard Time)
Pacific Standard Time (PST) covers the west coast of North America, including tech hubs like San Francisco and Seattle, and entertainment capital Los Angeles. The Pacific Time Zone is home to Silicon Valley and the world's largest technology companies. During summer, clocks advance to Pacific Daylight Time (PDT, UTC-07:00). PST is also observed in Baja California, Mexico.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
Best time to call between PST and Seoul
With a +17h offset there is no overlap inside a normal 9 AM – 5 PM day. Seoul opens at 9:00 AM KST, which is 2:00 AM in PST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PST and Seoul have no shared working hours because of the +17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PST is 17 hours ahead of Seoul (PST UTC-08:00 → KST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Seoul
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between PST and Seoul?
PST (PST, UTC-08:00) is 17 hours ahead of Seoul (KST, UTC+09:00). The gap is currently +17h.
How do I convert PST time to Seoul time?
Add +17h to PST local time. For example, 9:00 AM in PST is 2:00 AM in Seoul (next day).
What time is it in Seoul right now?
Seoul uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +17h offset from PST.
What is the best time to call Seoul from PST?
There is no shared working-hours window because of the +17h gap. The closest option is 1:00 PM in PST, which is 6:00 AM in Seoul.
Which is ahead, PST or Seoul?
PST is 17 hours ahead of Seoul. When it is 12:00 PM in PST it is 5:00 AM in Seoul.
Do PST and Seoul use different time zones?
PST uses PST at UTC-08:00, while Seoul (South Korea) uses KST at UTC+09:00. The IANA identifiers are America/Los_Angeles and Asia/Seoul.
Does daylight saving time affect the PST–Seoul difference?
Neither zone observes daylight saving time, so the +17h offset between PST and Seoul is fixed all year.
Which other cities share PST's time zone?
PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PST, PST's zone?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PST and Seoul?
Sometimes. The +17h gap is large enough that 8:00 PM or later in PST already falls on the next day in Seoul.
What is the time difference between PST and Seoul?
Seoul is +17h from PST.
What timezone is PST in?
PST operates on its local timezone.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
Which countries use PST (Pacific Standard Time)?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PST observe daylight saving time?
Yes, PST switches to PDT during summer months.
What are some interesting facts about PST?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in PST, what time is it in Seoul?
When it is 12:00 AM (midnight) in PST (PST), it is +17h later in Seoul (KST).
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