- December 4th, Monday
- December 12th, Tuesday
- December 18th, Monday
For those observing a more modern kalendar, such as that in use immediately before Pius XII, you could pray the first Office on December 5th so as to observe St Peter Chrysologus. December 12th would be within the Octave of the Immaculate Conception, which cannot be avoided, but allows the ancient feast of St Damasus to be had.
Be sure to leave those intentions!