63
All the brothers are bound to the celebration of the conventual Mass and the liturgy of the hours in choir. All should be conscious of this common obligation. Those who are solemnly professed but who cannot be present at the common celebration should say the liturgy of the hours privately. Those who are simply professed should say at least Lauds and Vespers.
Constitution
In fieri:
No
Valere coepit:
Primo promulgata: