KST to PST to UTC Time Converter
Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 5.
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Quick answers
Selected conversion
4:00 pm16:00 KST (UTC+9), Mar 30, 2023 = 12:00 am00:00 PDT (UTC-7), Mar 30, 2023 = 7:00 am07:00 UTC (UTC+0), Mar 30, 2023
KST is 16 hours ahead of PDT. KST is 9 hours ahead of UTC.
How the time difference changes
KST to PST
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 6:00 pm in KST correspond to 5:00 pm (previous day) to 2:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in KST correspond to 4:00 pm (previous day) to 1:00 am in PST.For most of the year, working hours of 09:00 to 18:00 in KST correspond to 17:00 (previous day) to 02:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in KST correspond to 16:00 (previous day) to 01:00 in PST.
KST to UTC
KST is 9 hours ahead of UTC year-round.
Working hours of 9:00 am to 6:00 pm in KST correspond to 12:00 am to 9:00 am in UTC.Working hours of 09:00 to 18:00 in KST correspond to 00:00 to 09:00 in UTC.
Compare KST time with PST and UTC 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. Korea Standard Time is 9 hours ahead of Coordinated Universal Time.
4:00 pm16:00 in KST is 12:00 am00:00 in PDT and is 7:00 am07:00 in UTC
KST to PDT call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in KST which corresponds to 5pm-6pm17:00-18:00 in PDT (previous day)
KST to UTC call time
Best time for a conference call or a meeting is between 5:30pm-6:30pm17:30-18:30 in KST which corresponds to 8:30am-9:30am08:30-09:30 in UTC. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
4:00 pm16:00 Korea Standard Time (KST). Offset UTC +9:00 hours
12:00 am00:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
7:00 am07:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours
4:00 pm16:00 KST / 12:00 am00:00 PDT / 7:00 am07:00 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.
| KST | PDT | UTC |
|---|---|---|
| 8:00am previous day | 3:00pm previous day | |
| 9:00am previous day | 4:00pm previous day | |
| 10:00am previous day | 5:00pm previous day | |
| 11:00am previous day | 6:00pm previous day | |
| 12:00pm previous day | 7:00pm previous day | |
| 1:00pm previous day | 8:00pm previous day | |
| 2:00pm previous day | 9:00pm previous day | |
| 3:00pm previous day | 10:00pm previous day | |
| 4:00pm previous day | 11:00pm previous day | |
| 5:00pm previous day | 12:00am | |
| 6:00pm previous day | 1:00am | |
| 7:00pm previous day | 2:00am | |
| 8:00pm previous day | 3:00am | |
| 9:00pm previous day | 4:00am | |
| 10:00pm previous day | 5:00am | |
| 11:00pm previous day | 6:00am | |
| 12:00am | 7:00am | |
| 1:00am | 8:00am | |
| 2:00am | 9:00am | |
| 3:00am | 10:00am | |
| 4:00am | 11:00am | |
| 5:00am | 12:00pm | |
| 6:00am | 1:00pm | |
| 7:00am | 2:00pm | |
| 08:00 previous day | 15:00 previous day | |
| 09:00 previous day | 16:00 previous day | |
| 10:00 previous day | 17:00 previous day | |
| 11:00 previous day | 18:00 previous day | |
| 12:00 previous day | 19:00 previous day | |
| 13:00 previous day | 20:00 previous day | |
| 14:00 previous day | 21:00 previous day | |
| 15:00 previous day | 22:00 previous day | |
| 16:00 previous day | 23:00 previous day | |
| 17:00 previous day | 00:00 | |
| 18:00 previous day | 01:00 | |
| 19:00 previous day | 02:00 | |
| 20:00 previous day | 03:00 | |
| 21:00 previous day | 04:00 | |
| 22:00 previous day | 05:00 | |
| 23:00 previous day | 06:00 | |
| 00:00 | 07:00 | |
| 01:00 | 08:00 | |
| 02:00 | 09:00 | |
| 03:00 | 10:00 | |
| 04:00 | 11:00 | |
| 05:00 | 12:00 | |
| 06:00 | 13:00 | |
| 07:00 | 14:00 |
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
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +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.
- India - Military abbreviation for KST
- I - short form of 'India'
- Asia/Pyongyang
- Asia/Seoul
- ROK
- Korea Standard Time - UTC +9
- Pyongyang Time - UTC +8:30
- 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
On March 30, 2023 the shaded areas are on UTC−7 (PDT).
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).
End: Pacific Standard Time (PST) ended on Sunday, March 12, 2023 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 12, 2023, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 5, 2023 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 5, 2023, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
PST representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -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.
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
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.
On March 30, 2023 some of the lighter areas are on UTC+1 (British Summer Time, Irish Standard Time, WEST).
UTC representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- 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