Holy Rule Of Saint Benedict
Of the Divine Office during the Night
Making due allowance for circumstances, the brethren will rise during
the winter season, that is, from the calends of November till Easter,
at the eighth hour of the night; so that, having rested till a little
after midnight, they may rise refreshed. The time, however, which
remains over after the night office (Matins) will be employed in study
by those of the brethren who still have some parts of the psalms and
the lessons to learn.
But from Easter to the aforesaid calends, let the hour for celebrating
the night office (Matins) be so arranged, that after a very short
interval, during which the brethren may go out for the necessities of
nature, the morning office (Lauds), which is to be said at the break of
day, may follow presently.