No overlap — one side will join outside working hours
KST (Seoul)
PDT (Los Angeles)
00:00
08:00-1d
01:00
09:00-1dWorking
02:00
10:00-1dWorking
03:00
11:00-1dWorking
04:00
12:00-1dWorking
05:00
13:00-1dWorking
06:00
14:00-1dWorking
07:00
15:00-1dWorking
08:00
16:00-1dWorking
09:00Working
17:00-1doff
10:00Working
18:00-1doff
11:00Working
19:00-1doff
12:00Working
20:00-1doff
13:00Working
21:00-1doff
14:00Working
22:00-1doff
15:00Working
23:00-1doff
16:00Working
00:00off
17:00
01:00
18:00
02:00
19:00
03:00
20:00
04:00
21:00
05:00
22:00
06:00
23:00
07:00
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between kst and pdt?
Korea Standard Time (kst) is UTC+9 and Pacific Daylight Time (pdt) is UTC-7. The difference between them is 16 hours.
Where is kst used?
Korea Standard Time (kst) is used in South Korea and surrounding regions. The IANA timezone identifier is Asia/Seoul.
Where is pdt used?
Pacific Daylight Time (pdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Los_Angeles.
How do I convert kst to pdt?
Use the interactive converter above. Drag the time slider to any kst time and the pdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
How far apart are KST (Seoul) and PDT (Los Angeles)?
KST (Seoul) is 16 hours ahead of PDT (Los Angeles). When KST (Seoul) clocks hit noon, PDT (Los Angeles) reads 20:00.
KST (Seoul) observes Asia/Seoul and PDT (Los Angeles) observes America/Los_Angeles — a 16 hours gap between them.
Daily overlap window
When KST (Seoul) is in standard working hours, PDT (Los Angeles) is not — and vice versa. There is no mutual business window between these two locations.
Optimal meeting slots
No business hours overlap exists between KST (Seoul) and PDT (Los Angeles). Showing the most balanced options with minimal inconvenience for both locations.
08:00 Seoul / 16:00 Los Angeles⚡ One side off-hours
⚠️ 1h before working hours in Seoul
09:00 Seoul / 17:00 Los Angeles⚡ One side off-hours
⚠️ 1h after working hours in Los Angeles
07:00 Seoul / 15:00 Los Angeles⚡ One side off-hours
⚠️ 2h before working hours in Seoul
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
KST (Seoul)7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
PDT (Los Angeles)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
Working across KST (Seoul) and PDT (Los Angeles)
Coordinating between KST (Seoul) (South Korea) and PDT (Los Angeles) (USA) means working around a 16-hour time difference. Since standard business hours don't naturally overlap, meetings usually require one side to shift slightly outside their normal working day.
💡 Best practice for cross-timezone meetings
⚡
08:00–09:00 in KST (Seoul) corresponds to 16:00–17:00 in PDT (Los Angeles) (1h before working hours in Seoul).
⚡
09:00–10:00 in KST (Seoul) corresponds to 17:00–18:00 in PDT (Los Angeles) (1h after working hours in Los Angeles).
⚡
07:00–08:00 in KST (Seoul) corresponds to 15:00–16:00 in PDT (Los Angeles) (2h before working hours in Seoul).
Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any KST (Seoul) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
