和刻

This app is useful both as a clock and for studying history.

While primarily displaying an analog clock with a second hand, it also shows in real time what time of day corresponds to the current moment in the Edo period.

"What time exactly is the hour of the ox (Ushimitsu)?"

"What time is it now when they use the hour of [specific time] in historical dramas?"

This app can answer these questions.

In the Edo period, the length of the day was defined by "Akemutsu" (dawn six) (the hour of the rabbit) and "Kuremutsu" (dusk six) (the hour of the rooster).

The basic unit was "ittoki" (one hour), which divided both day and night into six equal parts, and the length of each hour varied depending on the season, using a "variable time system."

This app automatically obtains the sunrise and sunset times of your current location using GPS and displays in real time what time of day corresponds to the current moment in the Edo period.

It also supports the easy-to-understand "fixed time system," where one hour is fixed at two hours, often used in historical novels and dramas.

This app is perfect for everyday use as a watch, for those who want to enjoy history and period dramas more, and for those interested in Japanese culture and calendars.