San Francisco
Exact time synced with atomic clocks (IANA + NTP)
Wednesday, May 20, 2026
United States Β· America/Los_Angeles Β· PDT
San Francisco and Seoul Time Difference
San Francisco is 16h behind Seoul
Seoul
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
South Korea Β· Asia/Seoul Β· GMT+9
Best time for work calls
If you are scheduling a call between San Francisco and Seoul, there is very limited or no overlap in normal business hours. Consider early-morning or late-evening calls for one side, or use async communication.
Best time for family calls
San Francisco and Seoul have a comfortable window for a family call β no awkward alarms required. San Francisco is 16 hours behind Seoul, which gives you 4 hours of genuine overlap when both sides are free. Aim for between 6 pm and 10 pm in San Francisco β that lands at 10 am to 2 pm in Seoul, after the school run and before anyone's ready for bed. For a Sunday catch-up or a midweek check-in, this is the sweet spot.
San Francisco
Memorial Day
May 25in 5dJuneteenth National Independence Day
Jun 19in 30dIndependence Day
Jul 3in 44d
Daylight Cycle
π
Dawn5:26:47 AM
βοΈ Sunrise5:56:39 AM
π Solar Noon1:07:38 PM
π Golden Hour7:40:53 PM
π Sunset8:18:38 PM
π Dusk8:48:30 PM
Day length14:21:59
Data via sunrisesunset.io
Current Weather
ConditionβοΈ Clear sky
Temperature18Β°C
Feels like15Β°C
Humidity54%
Wind13 mph W
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise10:43
Moonset00:50
Seoul
Buddha's Birthday
May 24in 4dMemorial Day
Jun 6in 17dConstitution Day
Jul 17in 58d
Daylight Cycle
π
Dawn4:48:55 AM
βοΈ Sunrise5:18:43 AM
π Solar Noon12:30:04 PM
π Golden Hour7:03:44 PM
π Sunset7:41:26 PM
π Dusk8:11:14 PM
Day length14:22:42
Data via sunrisesunset.io
Current Weather
Conditionπ¦οΈ Drizzle
Temperature16Β°C
Feels like17Β°C
Humidity92%
Wind4 mph NE
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:13
Moonset00:23