Updating current time…
South KoreaKST
UTC+9
12am
3am
6am
9am
12pm
3pm
6pm
9pm
BST
12am
3am
6am
9am
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3pm
6pm
9pm

Quick answers

Selected conversion

9:00 pm21:00 KST (UTC+9), Nov 5, 2026 = 11:00 pm23:00 BST (UTC+11), Nov 5, 2026

Busan is 2 hours behind BST.

How the time difference changes

Busan is 2 hours behind BST Pacific year-round.

Working hours of 9:00 am to 6:00 pm in Busan correspond to 11:00 am to 8:00 pm in BST Pacific.Working hours of 09:00 to 18:00 in Busan correspond to 11:00 to 20:00 in BST Pacific.

Compare Busan time with BST 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 2 hours behind Bougainville Standard Time.
9:00 pm21:00 in Busan, South Korea is 11:00 pm23:00 in BST

Busan to BST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in Busan which corresponds to 11am-6pm11:00-18:00 in BST

9:00 pm21:00 KST (Korea Standard Time) (Busan, South Korea). Offset UTC +9:00 hours
11:00 pm23:00 Bougainville Standard Time (BST). Offset UTC +11:00 hours

9:00 pm21:00 Busan, South Korea / 11:00 pm23:00 BST

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Hourly time comparison
Busan, South KoreaBST
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Busan Time Zone and Facts

Time Zone

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

Busan Facts

Country
South Korea
Alternative Names
Bousan, Busan, Busan-si, Busán, Fousan, Fusan, Fuzan, PUS, Phu San, Phủ San, Pusan, Pusana, Pusano, Tsau-liang-hai, busan, busangwang-yeogsi, busansi, fu shan, fu shan guang yu shi, fu shan shi, pu san, Μπούσαν, Пусан, ปูซาน, 釜山, 釜山市, 釜山广域市, 釜山広域市, 부산, 부산광역시, 부산시
Population
3,285,147
Currency
Won (KRW)
Geographic Coordinates
35° 06' N Latitude / 129° 01' E Longitude
International Dialing Code
+82

Bougainville Standard Time

Offset: BST is 11 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Papua New Guinea

Principal Cities: The largest city in the BST time zone is Arawa in Papua New Guinea, with about 40,266 people. Other major cities in this time zone include Kieta, Panguna.

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

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +11 - basic short
  • +1100 - basic
  • +11:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates an offset of eleven hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Lima - Military abbreviation for BST
  • L - short form of 'Lima'
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
Time zones with the GMT +11 offset:
  • AEDT - Australian Eastern Daylight Time
  • BST - Bougainville Standard Time
  • KOST - Kosrae Time
  • L - Lima Time Zone
  • LHDT - Lord Howe Daylight Time
  • MAGT - Magadan Time
  • NCT - New Caledonia Time
  • NFT - Norfolk Time
  • PONT - Pohnpei Standard Time
  • SBT - Solomon Islands Time
  • VLAST - Vladivostok Summer Time
  • VUT - Vanuatu Time