One of my favorite possessions is an 18th century Japanese Sahku Dokei from the Tokugawa shogunate. It's a clock that tells time using twelve temporal hours, six for day, six for night. All the hour markers are movable, so you can adjust them as the seasons change, that way your hours are always evenly dividing the day and night.

It pretty obviously wasn't intended to be designed in the Chindogu style, as that was the standard method of telling time in Japan before the modern time system was adopted, but it sure feels like it when looking at it now.

The Romans used a similar method of time division.