Seoul to Seattle Time Converter

Updating current time…
Seoul
South KoreaKST
UTC+9
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Seattle
Washington, USAPST
UTC−8
17h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:00 pm21:00 KST (UTC+9), Nov 7, 2026 = 4:00 am04:00 PST (UTC-8), Nov 7, 2026

Seoul is 17 hours ahead of Seattle.

How the time difference changes

For most of the year, Seoul is 16 hours ahead of Seattle. From Nov 1, 2026 to Mar 14, 2027, and from Nov 7, 2027 to Mar 12, 2028, Seoul is 17 hours ahead of Seattle.

For most of the year, working hours of 9:00 am to 6:00 pm in Seoul correspond to 5:00 pm (previous day) to 2:00 am in Seattle. At other times of the year, working hours of 9:00 am to 6:00 pm in Seoul correspond to 4:00 pm (previous day) to 1:00 am in Seattle.For most of the year, working hours of 09:00 to 18:00 in Seoul correspond to 17:00 (previous day) to 02:00 in Seattle. At other times of the year, working hours of 09:00 to 18:00 in Seoul correspond to 16:00 (previous day) to 01:00 in Seattle.

Compare Seoul time with Seattle time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

KST (Korea Standard Time) is 17 hours ahead of PST (Pacific Standard Time).
9:00 pm21:00 in Seoul, South Korea is 4:00 am04:00 in Seattle, WA, USA

Seoul to Seattle call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in Seoul which corresponds to 4pm-6pm16:00-18:00 in Seattle (previous day)

9:00 pm21:00 KST (Korea Standard Time) (Seoul, South Korea). Offset UTC +9:00 hours
4:00 am04:00 PST (Pacific Standard Time) (Seattle, WA, USA). Offset UTC -8:00 hours

9:00 pm21:00 Seoul, South Korea / 4:00 am04:00 Seattle, WA, USA

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Hourly time comparison
Seoul, South KoreaSeattle, WA, USA
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Seoul Time Zone and Facts

Time Zone

Abbreviation / Offset
KST – Korea Standard Time, UTC+9 (no daylight saving time)

Seoul Facts

Country
South Korea
Alternative Names
Hanyang, SEL, Seoel, Seol, Seoul, Seoul-si, Seuel, Seul, Seula, Seulas, Seulo, Seulum, Seúl, Seül, Siul, Soeul, Sol, Soul, Sye-ul, Syou-ouen, Szoeul, Szöul, Séoul, Sêûl, Söul, Sŏul, Wang-ching, Wo-jo, Wō-jō, ciyol, han-yang, saul, seoul, seoulsi, seoulteugbyeolsi, seuli, shou er, shou er te bie shi, si'ula, siyola, sol, sola, souru, souru te bie shi, sywl, Σεούλ, Сеул, Соул, Сөүл, Սեուլ, סאול, סיאול, סעאל, سئول, سيول, سیول, سێئول, سېئول, सियोल, सोल, সিউল, சியோல், ಸೌಲ್, സോൾ, โซล, སེ་ཨུལ།, ဆိုးလ်မြို့, სეული, ሶል, សេអ៊ូល, ソウル, ソウル特別市, 首尔, 首尔特别市, 서울, 서울시, 서울특별시, 한양
Population
10,349,312
Currency
Won (KRW)
Geographic Coordinates
37° 33' N Latitude / 126° 58' E Longitude
International Dialing Code
+82
More About Seoul
Seoul local time and city facts

Seattle Time Zone and Facts

Time Zone

Abbreviation / Offset
PST – Pacific Standard Time, UTC-8 (now)
PDT – Pacific Daylight Time, UTC-7 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (PDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (PST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Seattle Facts

Country
USA
State
Washington
Alternative Names
SEA, Seatl, Seattle, Seattlum, Siatl, Siatul, Siehtl, Sietl, Sietla, Sietlas, Sijetl, Siyaatil, Séatl, ciyattil, shiatoru, si'aitala, siaeteul, sietʼli, siyatal, siyatala, syatl, xi ya tu, Σιάτλ, Сиатъл, Сиетл, Сиэтл, Сијетл, Сіэтл, Сієтл, Սիեթլ, סיאטל, سياتل, سیئٹل, سیاتل, سیاٹل, सिअ‍ॅटल, सीऐटल, সিয়াটল, சியாட்டில், ಸಿಯಾಟಲ್, ซีแอตเทิล, სიეტლი, ስያትል, ស៊ីតថល, シアトル, 西雅圖, 시애틀
Population
780,995
Currency
Dollar (USD)
Geographic Coordinates
47° 36' N Latitude / 122° 19' W Longitude
International Dialing Code
+1
More About Seattle
Seattle time now