Feasts replaced by Sunday observances:
Circumcision Jan 1 (W), Paul Jan 15 (W), Vincent & Anastasius Jan 22 (R), Francis (Jan 29 (W)
Fridays are days of Abstinence and Sundays are Days of Obligation.
A "Ferial" is a "free" day on which there is no feast scheduled.
"MP" + "EP" are links for the daily office reading