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In 1857, Mitsuhisa Suzuki from Sakura (the present-day Chiba prefecture) revised and enlarged a pamphlet originally published by Tomotada Ogawa from Izumo (the present-day Shimane prefecture) in 1838. The text describes methods for using western timepieces. A famous passage explains how to determine sunrise and sunset. in the seasonal time system adopted in the Edo period.
|Name||Methods for using western timepieces|