Seoul to PDT
-16hSeoul
KSTSOURCEPDT
PDTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and PDT on the World Map
The map below highlights the KST (Korea Standard Time) and PDT (Pacific Daylight Time) timezone regions across the globe.
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).
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
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.
Seoul vs PDT: Offsets, DST and Best Call Times
Seoul runs on Korean Standard Time (KST) at UTC+09:00. PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. That puts Seoul 16 hours behind PDT — a difference of -16h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 5:00 PM in PDT on the previous day. Midnight in Seoul is 8:00 AM in PDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to PDT time conversion table
| Seoul (KST) | PDT (PDT) | Day |
|---|---|---|
| 12:00 AM | 8:00 AM | previous day |
| 6:00 AM | 2:00 PM | previous day |
| 7:00 AM | 3:00 PM | previous day |
| 8:00 AM | 4:00 PM | previous day |
| 9:00 AM | 5:00 PM | previous day |
| 12:00 PM | 8:00 PM | previous day |
| 3:00 PM | 11:00 PM | previous day |
| 5:00 PM | 1:00 AM | same day |
| 6:00 PM | 2:00 AM | same day |
| 9:00 PM | 5:00 AM | same day |
Why people convert Seoul to PDT time
- Scheduling a call from Seoul to PDT: a 10:00 AM start in Seoul lands at 6:00 PM in PDT the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -16h gap: Seoul and PDT 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 PDT is 5:00 PM in Seoul.
- Booking travel or deliveries: tracking PDT local time against Seoul keeps pickup windows and arrival estimates honest across the -16h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -16h gap is not.
- With a -16h gap there is no shared 9-to-5 window, so alternate the early start: one week Seoul takes the early slot, the next week PDT does.
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.
About PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
Best time to call between Seoul and PDT
With a -16h offset there is no overlap inside a normal 9 AM – 5 PM day. PDT opens at 9:00 AM PDT, which is 5:00 PM in Seoul, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Seoul and PDT have no shared working hours because of the -16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Seoul is 16 hours behind PDT (KST UTC+09:00 → PDT UTC-07:00). 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
Seoul
Does not observe DST
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
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 Seoul and PDT?
Seoul (KST, UTC+09:00) is 16 hours behind PDT (PDT, UTC-07:00). The gap is currently -16h.
How do I convert Seoul time to PDT time?
Add -16h to Seoul local time. For example, 9:00 AM in Seoul is 5:00 PM in PDT (previous day).
What time is it in PDT right now?
PDT uses PDT at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -16h offset from Seoul.
What is the best time to call PDT from Seoul?
There is no shared working-hours window because of the -16h gap. The closest option is 1:00 PM in Seoul, which is 9:00 PM in PDT.
Which is behind, Seoul or PDT?
Seoul is 16 hours behind PDT. When it is 12:00 PM in Seoul it is 8:00 PM in PDT.
Do Seoul and PDT use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while PDT uses PDT at UTC-07:00. The IANA identifiers are Asia/Seoul and America/Los_Angeles.
Does daylight saving time affect the Seoul–PDT difference?
Neither zone observes daylight saving time, so the -16h offset between Seoul and PDT is fixed all year.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and PDT?
Sometimes. The -16h gap is large enough that 8:00 PM or later in Seoul already falls on the in PDT.
What is the time difference between Seoul and PDT?
PDT is -16h from Seoul.
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 timezone is PDT in?
PDT operates on its local timezone.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the PDT timezone?
Major cities in the PDT timezone include Los Angeles, San Francisco, Seattle, Vancouver, Portland.
What is the UTC offset for PDT?
Pacific Daylight Time (PDT) is at UTC-07:00. During daylight saving time, it shifts to PST.
What should I know about the PDT timezone?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
When is it midnight in Seoul, what time is it in PDT?
When it is 12:00 AM (midnight) in Seoul (KST), it is -16h later in PDT (PDT).
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