February 22, June 23, October 23
Chapter 18: In What Order the Psalms Are to Be Said
At Terce, Sext and None on Monday
let the nine remaining sections of Psalm 118 be said,
three at each of these Hours.
Psalm 118 having been completed, therefore,
on two days, Sunday and Monday,
let the nine Psalms from Psalm 119 to Psalm 127
be said at Terce, Sext and None,
three at each Hour,
beginning with Tuesday.
And let these same Psalms be repeated every day until Sunday
at the same Hours,
while the arrangement of hymns, lessons and verses
is kept the same on all days;
and thus Prime on Sunday will always begin with Psalm 118.