[0xcg]

Great article that covers some fantastic examples of sun-based time. If you want to read about two more, Seiko has a great article [1] about a traditional Japanese clock (Wadokei) which had moving indices based on the seasons.

The local time we keep today is supremely useful for global synchronization, but is disconnected from the natural world. I came across this example (Wadokei) after making an app for myself to track the moon above and below the horizon and doing some research after creating a similar style clock which uses the sun as the anchor of the clock (high noon is the top of the clock, instead of 12 noon). This one is a full-day clock that shows the hours of the “local time” day as well as the positioning of the sun and moon. The hours shift dramatically during the peak of summer and depths of winter, especially at extreme latitudes [2]. You can really get a sense of the length of the daylight and how it changes by using any of these sun-based clocks.

[1] https://museum.seiko.co.jp/en/knowledge/relation_15/

[2] https://apps.apple.com/us/app/moontime-lunar-clock-widget/id...