KST to PST Converter

Updating current time…
KST
Korea Standard Time
UTC+9
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PDT/PST
Pacific Daylight Time
UTC−7
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 1.
Use PST all year (UTC−8)

Quick answers

Selected conversion

9:00 pm21:00 KST (UTC+9), Oct 12, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 12, 2026

KST is 16 hours ahead of PDT.

KST and PST (US winter time, UTC-8) examples

These examples always use KST (UTC+9) and PST (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

KST is 17 hours ahead of PST.

PST is US Pacific winter time (early November to mid-March). The rest of the year Los Angeles uses PDT (UTC-7), one hour later. For Pacific Time that follows daylight saving time, use KST to PT. For daylight-time examples, use KST to PDT.

How the time difference changes

For most of the year, KST is 16 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, KST is 17 hours ahead of PST.

For most of the year, working hours of 9:00 am to 5:00 pm in KST correspond to 5:00 pm (previous day) to 1:00 am in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in KST correspond to 4:00 pm (previous day) to 12:00 am in PST.For most of the year, working hours of 09:00 to 17:00 in KST correspond to 17:00 (previous day) to 01:00 in PDT. At other times of the year, working hours of 09:00 to 17:00 in KST correspond to 16:00 (previous day) to 00:00 in PST.

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

Time Difference

Korea Standard Time is 16 hours ahead of Pacific Daylight Time.
9:00 pm21:00 in KST is 5:00 am05:00 in PDT

KST to PDT call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in KST which corresponds to 4:30pm-5:30pm16:30-17:30 in PDT (previous day). Their 9am–5pm09:00–17:00 working hours do not overlap; this is a suggested compromise.

9:00 pm21:00 Korea Standard Time (KST). Offset UTC +9:00 hours
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

9:00 pm21:00 KST / 5:00 am05:00 PDT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
KSTPDT
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Korea Standard Time

Offset: KST is 9 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Korea (North), Korea (South)

Principal Cities: The largest city in the KST time zone is Seoul in South Korea, with about 10.349 million people. Other major cities in this time zone include Busan, Pyongyang, Incheon, Daegu.

Daylight Saving: Clocks in Korea Standard Time (KST) do not change for daylight saving time, so KST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

Map of the areas on Korea Standard Time (KST)
KST all year

Open the world time zone map© OpenStreetMap

KST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for KST
  • I - short form of 'India'
IANA/Olson: Reflects KST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Pyongyang
  • Asia/Seoul
  • ROK
KST Abbreviation: Several time zones share KST abbreviation and it could refer to these time zones
  • Korea Standard Time - UTC +9
  • Pyongyang Time - UTC +8:30
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

Map of the areas on Pacific Standard Time (PST)
PST part of the year

Today the shaded areas are on UTC−7 (PDT).

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).

123456789101112End: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See upcoming clock changes worldwide.

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT