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 Tokyo Time Difference
San Francisco is 16h behind Tokyo
Tokyo
Exact time synced with atomic clocks (IANA + NTP)
Thursday, May 21, 2026
Japan Β· Asia/Tokyo Β· GMT+9
Best time for work calls
If you are scheduling a call between San Francisco and Tokyo, 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 Tokyo have a comfortable window for a family call β no awkward alarms required. San Francisco is 16 hours behind Tokyo, 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 Tokyo, 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
Tokyo
Marine Day
Jul 20in 61dMountain Day
Aug 11in 83dRespect for the Aged Day
Sep 21in 124d
Daylight Cycle
π
Dawn4:03:41 AM
βοΈ Sunrise4:32:31 AM
π Solar Noon11:39:13 AM
π Golden Hour6:09:17 PM
π Sunset6:45:55 PM
π Dusk7:14:45 PM
Day length14:13:23
Data via sunrisesunset.io
Current Weather
Conditionπ¦οΈ Drizzle
Temperature21Β°C
Feels like24Β°C
Humidity94%
Wind1 mph NW
Data via Open-Meteo Β· Updates every 30 min
Moon Phase
Phaseπ Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonriseβ
Moonset23:26