Canonʹical Hours

The times with-in which the sacred offices may be performed. In the Roman Catholic Church they are seven—viz. matins, prime, tierce, sext, nones, vespers, and compline. Prime, tierce, sext, and nones are the first, third, sixth, and ninth hours of the day, counting from six in the morning. Compline is a corruption of completoʹrium (that which completes the services of the day). The reason why there are seven canonical hours is that David says, “Seven times a day do l praise thee” (Psalm oxix. 164).