Pentiment Clock
Canonical Hours
In the monastic traditions of the western church, the appointed times for prayer throughout the day.
Benedict (c. 480-c. 547) set the basis for this pattern of daily prayer in his Rule for Monasteries.
The seven “hours” are: matins and lauds (usually counted as a single hour), in the middle of the night; prime, at sunrise; terce, 9 a.m.; sext, noon; nones, 3 p.m.; vespers, sunset; and compline, bedtime.