Offset
The time difference between Busan and San Francisco is 16 hours.
Busan (KST) is ahead of San Francisco (PDT).
KST: UTC+9
PDT: UTC-7
San Francisco is currently observing daylight saving time; Busan is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Busan and San Francisco don't overlap on the same weekday. San Francisco is 16 hours behind Busan.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
South Korea
- New Year's DayThu, Jan 1
- Lunar New YearMon, Feb 16
- Lunar New YearTue, Feb 17
- Lunar New YearWed, Feb 18
- Independence Movement DayMon, Mar 2
- Labour DayFri, May 1
- Children's DayTue, May 5
- Buddha's BirthdayMon, May 25
- Local Election DayWed, Jun 3
- Memorial DaySat, Jun 6
- Constitution DayFri, Jul 17
- Liberation DayMon, Aug 17
- ChuseokThu, Sep 24
- ChuseokFri, Sep 25
- ChuseokSat, Sep 26
- National Foundation DayMon, Oct 5
- Hangul DayFri, Oct 9
- Christmas DayFri, Dec 25
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Busan uses Korea Standard Time (KST). To call South Korea, dial +82.
San Francisco uses Pacific Time (PST, or PDT). To call United States, dial +1.
San Francisco is approximately 5,650 miles northeast of Busan.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Busan | San Francisco | Day |
|---|---|---|
| 12:00 am | 8:00 am | -1 day |
| 1:00 am | 9:00 am | -1 day |
| 2:00 am | 10:00 am | -1 day |
| 3:00 am | 11:00 am | -1 day |
| 4:00 am | 12:00 pm | -1 day |
| 5:00 am | 1:00 pm | -1 day |
| 6:00 am | 2:00 pm | -1 day |
| 7:00 am | 3:00 pm | -1 day |
| 8:00 am | 4:00 pm | -1 day |
| 9:00 am | 5:00 pm | -1 day |
| 10:00 am | 6:00 pm | -1 day |
| 11:00 am | 7:00 pm | -1 day |
| 12:00 pm | 8:00 pm | -1 day |
| 1:00 pm | 9:00 pm | -1 day |
| 2:00 pm | 10:00 pm | -1 day |
| 3:00 pm | 11:00 pm | -1 day |
| 4:00 pm | 12:00 am | Same day |
| 5:00 pm | 1:00 am | Same day |
| 6:00 pm | 2:00 am | Same day |
| 7:00 pm | 3:00 am | Same day |
| 8:00 pm | 4:00 am | Same day |
| 9:00 pm | 5:00 am | Same day |
| 10:00 pm | 6:00 am | Same day |
| 11:00 pm | 7:00 am | Same day |
Daylight saving time
San Francisco observes daylight saving time; Busan does not. The offset between the two zones changes when San Francisco transitions: on Sunday, November 1, 2026, clocks fall back from PDT to PST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:10 AM
- Sunset
- 7:38 PM
- Day length
- 14h 28m
- Sunrise
- 5:48 AM
- Sunset
- 8:32 PM
- Day length
- 14h 44m
Cities in these zones
Other cities in Pacific Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Korea Standard Time
- GMP
- ICN
- PUS
- TAE
- CJJ
- KWJ
- MWX
Airports in Pacific Time
- BUR
- HHR
- LAX
- LGB
- SNA
- CLD
- SAN
- TIJ
- OAK
- SFO
Related conversions
Common conversions
- What is 9:00 am Busan in San Francisco?
- 9:00 am Busan is 5:00 pm San Francisco, the previous day.
- What is 12:00 pm Busan in San Francisco?
- 12:00 pm Busan is 8:00 pm San Francisco, the previous day.
- What is 12:30 pm Busan in San Francisco?
- 12:30 pm Busan is 8:30 pm San Francisco, the previous day.
- What is 2:00 pm Busan in San Francisco?
- 2:00 pm Busan is 10:00 pm San Francisco, the previous day.
- What is 5:00 pm Busan in San Francisco?
- 5:00 pm Busan is 1:00 am San Francisco.
- What is 11:30 pm Busan in San Francisco?
- 11:30 pm Busan is 7:30 am San Francisco.