UTC to PST to KST Time Converter
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Selected conversion
12:00 pm12:00 UTC (UTC+0), Oct 16, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 16, 2026 = 9:00 pm21:00 KST (UTC+9), Oct 16, 2026
UTC is 7 hours ahead of PDT. UTC is 9 hours behind KST.
How the time difference changes
UTC to PST
For most of the year, UTC is 7 hours ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, UTC is 8 hours ahead of PST.
For most of the year, working hours of 9:00 am to 6:00 pm in UTC correspond to 2:00 am to 11:00 am in PDT. At other times of the year, working hours of 9:00 am to 6:00 pm in UTC correspond to 1:00 am to 10:00 am in PST.For most of the year, working hours of 09:00 to 18:00 in UTC correspond to 02:00 to 11:00 in PDT. At other times of the year, working hours of 09:00 to 18:00 in UTC correspond to 01:00 to 10:00 in PST.
UTC to KST
UTC is 9 hours behind KST year-round.
Working hours of 9:00 am to 6:00 pm in UTC correspond to 6:00 pm to 3:00 am (next day) in KST.Working hours of 09:00 to 18:00 in UTC correspond to 18:00 to 03:00 (next day) in KST.
Compare UTC time with PST and KST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Coordinated Universal Time is 7 hours ahead of Pacific Daylight Time. Coordinated Universal Time is 9 hours behind Korea Standard Time.
12:00 pm12:00 in UTC is 5:00 am05:00 in PDT and is 9:00 pm21:00 in KST
UTC to PDT call time
Best time for a conference call or a meeting is between 4pm-6pm16:00-18:00 in UTC which corresponds to 9am-11am09:00-11:00 in PDT
UTC to KST call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in UTC which corresponds to 5:30pm-6:30pm17:30-18:30 in KST. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
12:00 pm12:00 Coordinated Universal Time (UTC). Offset UTC 0:00 hours
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
9:00 pm21:00 Korea Standard Time (KST). Offset UTC +9:00 hours
12:00 pm12:00 UTC / 5:00 am05:00 PDT / 9:00 pm21:00 KST
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| UTC | PDT | KST |
|---|---|---|
| 5:00pm previous day | 9:00am | |
| 6:00pm previous day | 10:00am | |
| 7:00pm previous day | 11:00am | |
| 8:00pm previous day | 12:00pm | |
| 9:00pm previous day | 1:00pm | |
| 10:00pm previous day | 2:00pm | |
| 11:00pm previous day | 3:00pm | |
| 12:00am | 4:00pm | |
| 1:00am | 5:00pm | |
| 2:00am | 6:00pm | |
| 3:00am | 7:00pm | |
| 4:00am | 8:00pm | |
| 5:00am | 9:00pm | |
| 6:00am | 10:00pm | |
| 7:00am | 11:00pm | |
| 8:00am | 12:00am next day | |
| 9:00am | 1:00am next day | |
| 10:00am | 2:00am next day | |
| 11:00am | 3:00am next day | |
| 12:00pm | 4:00am next day | |
| 1:00pm | 5:00am next day | |
| 2:00pm | 6:00am next day | |
| 3:00pm | 7:00am next day | |
| 4:00pm | 8:00am next day | |
| 17:00 previous day | 09:00 | |
| 18:00 previous day | 10:00 | |
| 19:00 previous day | 11:00 | |
| 20:00 previous day | 12:00 | |
| 21:00 previous day | 13:00 | |
| 22:00 previous day | 14:00 | |
| 23:00 previous day | 15:00 | |
| 00:00 | 16:00 | |
| 01:00 | 17:00 | |
| 02:00 | 18:00 | |
| 03:00 | 19:00 | |
| 04:00 | 20:00 | |
| 05:00 | 21:00 | |
| 06:00 | 22:00 | |
| 07:00 | 23:00 | |
| 08:00 | 00:00 next day | |
| 09:00 | 01:00 next day | |
| 10:00 | 02:00 next day | |
| 11:00 | 03:00 next day | |
| 12:00 | 04:00 next day | |
| 13:00 | 05:00 next day | |
| 14:00 | 06:00 next day | |
| 15:00 | 07:00 next day | |
| 16:00 | 08:00 next day |
Coordinated Universal Time
Offset: UTC is the same as Greenwich Mean Time (GMT).
Countries using this time zone: Antarctica, Burkina Faso, Faroe Islands, Gambia, Ghana, Greenland, Guernsey, Guinea, Guinea-Bissau, Iceland, Ireland, Isle of Man, Ivory Coast, Jersey, Liberia, Mali, Mauritania, Morocco, Portugal, Saint Helena, São Tomé and Príncipe, Senegal, Sierra Leone, Spain, Togo, United Kingdom, Western Sahara
Principal Cities: The largest city in the UTC time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Abidjan, Bamako, Casablanca, Dakar.
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.
Today 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
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: 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
Today 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 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.
Start: 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 USA daylight saving time and upcoming clock changes worldwide.
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
Korea Standard Time
Offset: KST is 9 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: North Korea, South Korea
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