temporal hour

American  

noun

Horology.

1. a unit of time used in the Roman and Ottoman empires that divided the daylight into an equal number of hours, resulting in long summer hours and short winter hours.

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Etymology

Origin of temporal hour

First recorded in 1585–95

Example Sentences

As the time between dawn and dusk varies along with the seasons, the unit house changes: temporal hour clocks were designed to adjust to this variation.

From New York Times

One had a clock hand that moved at a fixed speed in the usual manner, but with a dial whose time interval is adjusted to the temporal hour system.

From New York Times

For his temporal hour system watch, Mr. Kikuno created the first hand-winding wadokei with a mechanism programmed over a year that can lengthen and shorten the space between moving index markers.

From New York Times