Random question, why do some Saints days have their own antiphons for the canticles and others don’t?
For example today, the 10th, and 11th are all Memorials and Charles Borromeo only has a prayer while Leo the Great has his own antiphons for the canticles. Then Martin of Tours has his own antiphons for everything as well as his own reading.
Why the difference?
I don’t know for certain but I think it just depends on the saint’s ‘rank’. If it’s a solemnity the saint’s day will probably have its own propers. The lower the rank the less likely the saint’s day will have it’s own proper. I hope the following might help.
Solemnity - EP I & II are proper, Invitatory Antiphon is proper, Office of Readings is proper, Lauds is proper but psalms of Sunday Week I are used, Daytime Prayer is taken from the Psalter or the Proper of the Season but the Final Prayer is proper. Compline is as for Sundays.
Feast - Invitatory Antiphon is proper, Office of Readings is proper, Lauds is proper but psalms of Sunday Week I are used, Daytime Prayer the hymn and psalms are from the occurring weekday but the readings and Final Prayer as proper, Vespers is proper, Compline is as for the occurring weekday.
Memorial - Invitatory Antiphon from the Common or occurring weekday, Office of Readings hymn from the Common or occurring weekday, antiphons and psalms from the Psalter, scripture readings for the occurring weekday, hagiographical reading from the Proper or Common, Lauds antiphons and psalms for occurring weekday, Final Prayer is proper, rest of the office can be from the Common or the occurring weekday, Daytime Prayer everything is from the occurring weekday, Vespers as Lauds, Compline everything for the occurring weekday.
In the above wherever the ‘proper’ is called for, if the saint lacks any propers then those parts of the office are taken from the appropriate Common.