Traditional Japanese timekeeping had variable hours - six of daylight and six of night.
https://forum.tz-uk.com/showthread.php?396264-Double-Foliot-Japanese-Clock-Kit
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Type: Posts; User: Mr Curta
Traditional Japanese timekeeping had variable hours - six of daylight and six of night.
https://forum.tz-uk.com/showthread.php?396264-Double-Foliot-Japanese-Clock-Kit
...