Technically speaking, there are 4 different Christmas Masses.
- Christmas Vigil, which takes place on Dec 24th at or after Vespers.
- Christmas Mass at Night, which takes place at or after Midnight
- Christmas Mass at Dawn, which takes place as the Sun comes up
- Christmas Mass during Day.
All 4 have different readings.
A Catholic is only obligated to attend one. Some parishes might have more than one of the Christmas Mass types not have another.
For example, they might have 2 Christmas Vigil Masses, and 2 Masses during the Day.
My parish has 2 Vigils Masses, and no “Mass at Night”
The parish I was baptized in (where my mother is a member) has the following Christmas Mass Schedule:
– 4 Vigil Masses (one in Spanish), with the first starting at 4PM
– 1 Mass at Night (at midnight)
– 1 Mass at Dawn at 8am
– 1 Mass during Day at 10am
They used to have a noon Mass on Christmas Day, but instead moved it to a Vigil Mass.
I personally love Midnight Mass because to me, there is something special about the stoke of midnight and hearing the Proclamation of the Birth of Christ chanted.