Rubrics. In the paragraphs dealing with the structure of this hour is given the rule for saying Pater Noster and Ave, The Psalms for Lauds in the new Breviary follow these rules:—
General Rule: Psalms of the current day.
Exception: Sunday Psalms on the excepted Feasts.
In applying the general rule to Sundays and week days, it will be seen that the Psalter contains two sets of Psalms for Lauds. The use of the two sets is as follows:—
Sundays: (i) Throughout the year: first set of Psalms.
(ii) Sundays from Septuagesima to Easter: second set of Psalms.
Ferias: The first set of Psalms is to be used on:—
(i) Ferias throughout the year, not including those in Advent, Septuagesima, Sexagesima and Quinquagesima weeks.
(ii) Ferias in Paschal time.
(iii) Feasts at any season of the year.