Early Morning Prayers in the RC Church

This page is the CodyCross answer for the clue below from Space Exploration, Group 909, Puzzle 1 (Simulated Flight).

Question is: Early Morning Prayers in the RC Church

and the answer is: NOCTURN

Word Meaning:

NOCTURN — (Christianity) The night office of the Christian liturgy of the Hours, such as is performed in monasteries.

Definitions from Wiktionary.