Time Difference Between San Francisco and Tokyo

Japan's office day starts nearer 9 than 8, and it ends more cleanly than a California startup expects. That decides the slot. Tokyo is 16 hours ahead of San Francisco from the second Sunday of March to the first Sunday of November, which makes 5 PM in San Francisco into 9 AM the next day in Tokyo. At 17 hours, from the first Sunday of November until the second Sunday of March, 9 AM in Tokyo is 4 PM the previous afternoon in San Francisco. Use the 9 AM Tokyo side. An 8 AM Tokyo standing call looks efficient on a US calendar and arrives to a room that is still walking in.

Tokyo has not moved its clock for daylight saving since the postwar experiment ended in 1952. San Francisco supplies the whole seasonal change, and it is one hour, twice a year, on the second Sunday of March and the first Sunday of November. The winter 17-hour setting is the one that lets California call at 4 PM instead of 5. If the invite was created in Tokyo time, California is the side that sees the hour move. If it was created in San Francisco time, Tokyo sees it. The side that did not create the event is the side that will miss it once.

The nonstop is about eleven hours and it crosses the date line. Flying west you leave on one date and land on the next, with the lost evening spent over the Pacific. Flying east you often land in California on the same calendar day you left Tokyo, at an earlier hour than departure. Sixteen or seventeen hours is past the point where 'east is harder' tells you much. Allow two days before you need judgment, and do not stack the arrival morning with the meeting you flew over for.