●江戸の和時計● (The Edo harmony clock)


The EDO clock, shown in the picture on the right, is an ancient Japanese clock in Edo era (back in 17 to 19 century), which is based upon the lunar calendar. The moving speed of the hand of the right clock is different in day and night, and is varied by the seasons. In every seasons, the hand points right at sunrise and left at sunset.

Click here to see how it works (work done by Rey.Hori(れい・ほり).

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