Highlighted rows fall within 09:00–18:00 in both places: 1 shared working hour.
Clock changes in Las Vegas and Seoul
Las Vegas
Pacific Daylight Time (PDT)
Next clock change Sun 1 Nov 2026 (UTC−7 → UTC−8)
Seoul
Korean Standard Time (KST)
No daylight saving time.
Time difference between Las Vegas and Seoul today
Today Seoul is 16 hours ahead of Las Vegas. When it is 09:00 in Las Vegas, it is 01:00 in Seoul the next day. Las Vegas is on Pacific Daylight Time (PDT); Seoul is on Korean Standard Time (KST).
When the Las Vegas to Seoul time difference changes
For most of the year Seoul is 16 hours ahead of Las Vegas. From 1 November to 31 December 2026, Seoul is 17 hours ahead of Las Vegas instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Seoul vs Las Vegas
Length
8 March 2026 to 31 October 2026
16 hours ahead
238 days
1 November 2026 to 31 December 2026
17 hours ahead
61 days
1 January 2027 to 13 March 2027
17 hours ahead
72 days
14 March 2027 to 6 November 2027
16 hours ahead
238 days
7 November 2027 to 31 December 2027
17 hours ahead
55 days
When Las Vegas and Seoul are both at work
When Seoul is 16 hours ahead of Las Vegas: no shared 09:00 to 17:00 hours; try 17:00 in Las Vegas (09:00 in Seoul).
When Seoul is 17 hours ahead of Las Vegas: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.
Frequently asked questions about Las Vegas and Seoul time
What time is it in Seoul when it is 9:00 AM in Las Vegas?
01:00 today; Seoul is 16 hours ahead of Las Vegas.
Does the time difference between Las Vegas and Seoul change?
Yes. It is usually 16 hours ahead, but changes when one side moves its clocks: 17 hours ahead from 1 November to 31 December 2026; 17 hours ahead from 1 January to 13 March 2027.