Text is from The Saint Andrew Daily Missal,
unless stated otherwise.
Ferias are Week-Days on which no Feast of a Saint is kept.
Ember Days (which are Ferias), Rogation Days (which are Ferias), and every Feria in Lent, have a special Mass.
On other Ferias, The Mass of the preceding Sunday is said.
Some Ferias are called Greater Ferias, and are divided into two Classes:
a. Privileged Ferias.
These are:
Ash Wednesday;
The First Three Days of Holy Week.
Privileged Ferias do not give place to a Feast.
b. Non-Privileged Ferias.
These are:
Ferias of Advent;
Ferias of Lent;
The Ember Days;
The Monday of Rogation Week.
A Commemoration of Non-Privileged Ferias is always made on Feast Days.
Non-Privileged Ferias’ Gospels are The Last Gospel at Feast Day Masses.
Lent (after Ash Wednesday);
and those in Passiontide (before Palm Sunday);
and The Ember Days (not those in Pentecost Week);
and on Monday of Rogation Week;
and on Ordinary Vigils;
if a Greater-Double Feast,
Double Feast,
or,
Semi-Double Feast,
is kept,
it is allowed in Private Masses to say The Mass of The Feria, or of The Vigil, with a Commemoration of The Feast,
or,