V
Vico
Guest
1917 Canon law shows that is was about hours for feast days, fast, abstinence, so it really does not have one direct replacement canon in the 1983 code, rather at least these 1250-1251 and Can. 202 §1, and including the one you gave.Actually, what replaces canon 1246 from the 1917 code is
Can. 1248 §1. A person who assists at a Mass celebrated anywhere in a Catholic rite either on the feast day itself or in the evening of the preceding day satisfies the obligation of participating in the Mass.
This because of how Sunday and Solemnities are counted since the reform and restoration of the liturgy.
I have an unfortunate familiarity with the canonist you cite, concerning the restoration of the permanent diaconate and his theories about aspects of it. They caused upset and required the Holy See to intervene and correct. As a result of the affair, I’m afraid I pass over his writings in favour of others in whom I have confidence. His commentary on the code is of no interest to me.
Can 1246. Supputatio diei festi, itemque diei abstinentiae et ieiunii, facienda est a media nocte usque ad mediam noctem, salvo praescripto can. 923.
[Reckoning of the day of the feast, as well as of the day of abstinence and fasting, must be made from midnight …]