What Time Is It In Tokyo? (1971)

This film provides an educational explanation of how time zones and the International Date Line function, using the contrast between Tokyo and North America to illustrate the impact of the Earth’s rotation on our daily schedules. By examining the history of timekeeping—from the primitive observation of the sun to the implementation of 24 standardized time zones—the narrator demonstrates why clocks must be adjusted when traveling. The film further explores the complexities of calendar dates, explaining how crossing the International Date Line necessitates adjusting days to keep global time synchronized, ultimately concluding that adhering to the sun’s position remains the most practical method for organizing human activity.

Time zones, International Date Line, Earth’s rotation, timekeeping, longitude, global synchronization, education, geography, sun cycles, calendars