No shared working hoursSun, Aug 1

PDT
UTC−7
Sun, Aug 1
12am
3am
6am
9am
12pm
3pm
6pm
9pm
KST
UTC+9
Sun, Aug 1
16h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
UTC
UTC+0
Sun, Aug 1
7h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

3:00 am03:00 PDT (UTC-7), Aug 1, 2021 = 7:00 pm19:00 KST (UTC+9), Aug 1, 2021 = 10:00 am10:00 UTC (UTC+0), Aug 1, 2021

PDT is 16 hours behind KST. PDT is 7 hours behind UTC.

How the time difference changes

PDT to KST

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

For most of the year, working hours of 9:00 am to 6:00 pm in PDT correspond to 1:00 am (next day) to 10:00 am (next day) in KST. At other times of the year, working hours of 9:00 am to 6:00 pm in PST correspond to 2:00 am (next day) to 11:00 am (next day) in KST.For most of the year, working hours of 09:00 to 18:00 in PDT correspond to 01:00 (next day) to 10:00 (next day) in KST. At other times of the year, working hours of 09:00 to 18:00 in PST correspond to 02:00 (next day) to 11:00 (next day) in KST.

PDT to UTC

For most of the year, PDT is 7 hours behind UTC. From Nov 1, 2026 to Mar 14, 2027, PST is 8 hours behind UTC.

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

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

Time Difference

Pacific Daylight Time is 16 hours behind Korea Standard Time. Pacific Daylight Time is 7 hours behind Coordinated Universal Time.
3:00 am03:00 in PDT is 7:00 pm19:00 in KST and is 10:00 am10:00 in UTC

PDT to KST call time
Best time for a conference call or a meeting is between 5pm-6pm17:00-18:00 in PDT which corresponds to 9am-10am09:00-10:00 in KST (next day)
PDT to UTC call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in PDT which corresponds to 4pm-6pm16:00-18:00 in UTC

3:00 am03:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
7:00 pm19:00 Korea Standard Time (KST). Offset UTC +9:00 hours
10:00 am10:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours

3:00 am03:00 PDT / 7:00 pm19:00 KST / 10:00 am10:00 UTC

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
PDTKSTUTC
4:00pm7:00am
5:00pm8:00am
6:00pm9:00am
7:00pm10:00am
8:00pm11:00am
9:00pm12:00pm
10:00pm1:00pm
11:00pm2:00pm
12:00am next day3:00pm
1:00am next day4:00pm
2:00am next day5:00pm
3:00am next day6:00pm
4:00am next day7:00pm
5:00am next day8:00pm
6:00am next day9:00pm
7:00am next day10:00pm
8:00am next day11:00pm
9:00am next day12:00am next day
10:00am next day1:00am next day
11:00am next day2:00am next day
12:00pm next day3:00am next day
1:00pm next day4:00am next day
2:00pm next day5:00am next day
3:00pm next day6:00am next day
16:0007:00
17:0008:00
18:0009:00
19:0010:00
20:0011:00
21:0012:00
22:0013:00
23:0014:00
00:00 next day15:00
01:00 next day16:00
02:00 next day17:00
03:00 next day18:00
04:00 next day19:00
05:00 next day20:00
06:00 next day21:00
07:00 next day22:00
08:00 next day23:00
09:00 next day00:00 next day
10:00 next day01:00 next day
11:00 next day02:00 next day
12:00 next day03:00 next day
13:00 next day04:00 next day
14:00 next day05:00 next day
15:00 next day06:00 next day

Pacific Daylight Time

Offset: PDT is 7 hours behind Greenwich Mean Time (GMT).

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

Principal Cities: The largest city in the PDT 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: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Map of the areas on Pacific Daylight Time (PDT)
PDT part of the year

On August 1, 2021 all shaded areas are on PDT.

Daylight Saving: Pacific Daylight Time (PDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Pacific Standard Time (PST).

123456789101112Start: Pacific Daylight Time (PDT) started on Sunday, March 14, 2021 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 14, 2021, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Pacific Daylight Time (PDT) ends on Sunday, November 7, 2021 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 7, 2021, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

PDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for PDT
  • T - short form of 'Tango'
IANA/Olson: Reflects PDT 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
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone

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.

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

Coordinated Universal Time

Offset: UTC is the same as Greenwich Mean Time (GMT).

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is the successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but UTC is the standard the scientific community uses.
UTC has been the time standard commonly used across the world since 1972. It is used in many technical fields, such as aviation and meteorology, and to synchronize time across internet networks.

Map of the areas on Coordinated Universal Time (UTC)
UTC all year UTC part of the year

On August 1, 2021 some shaded areas are on UTC+1 (British Summer Time, Irish Standard Time, WEST).

UTC representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Coordinated Universal Time
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone