Are all ordinary Sundays to be treated as Solemnities? We had this problem when some of our churches celebrated the dedication of the Lateran Basilica this year, overriding the Sunday celebration. Is this correct?
According to the table of precedence in the General Norms for the Liturgical Year and Calendar, a Solemnity of the dedication of a particular church and the anniversary take precedence over Sundays in Ordinary Time.
The entire table of precedence is listed below.
1. Easter triduum of the Lord's passion and resurrection.
2. Christmas, Epiphany, Ascension, and Pentecost.
Sundays of Advent, Lent, and the Easter season.
Weekdays of Holy Week from Monday to Thursday inclusive.
Days within the octave of Easter.
3. Solemnities of the Lord, the Blessed Virgin Mary, and saints listed in the General Calendar.
4. Proper Solemnities, namely:
a. Solemnity of the principal patron of the place, that is, the city or state.
b. Solemnity of the dedication of a particular church and the anniversary.
c. Solemnity of the title, or of the founder, or of the principal patron of a religious order or congregation.
5. Feasts of the Lord in the General Calendar.
6. Sundays of the Christmas season and Sundays in Ordinary Time.
7. Feasts of the Blessed Virgin Mary and of the saints in the General Calendar.
8. Proper feasts, namely:
a. Feast of the principal patron of the diocese.
b. Feast of the anniversary of the dedication of the cathedral.
c. Feast of the principal patron of a region or province, or a country, or of a wider territory.
d. Feast of the title, founder, or principle patron of an order or congregation and of a religious province, without prejudice to the directives in no. 4.
e. Other feasts proper to an individual church.
f. Other feasts listed in the calendar of a diocese or of a religious order or congregation.
9. Weekdays of Advent from 17 December to 24 December inclusive.
Days within the octave of Christmas.
Weekdays of Lent.
10. Obligatory memorials in the General Calendar.
11. Proper obligatory memorials, namely:
a. Memorial of a secondary patron of the place, diocese, region, or province, country or wider territory, or of an order or congregation and of a religious province.
b. Obligatory memorials listed in the calendar of a diocese, or of an order or congregation.
12. Optional memorials; but these may be celebrated even on the days listed in no. 9, in the special manner described by the General Instruction of the Roman Missal and of the Liturgy of the Hours.
In the same manner obligatory memorials may be celebrated as optional memorials if they happen to fall on the Lenten weekdays.
13. Weekdays of Advent up to 16 December inclusive.
Weekdays of the Christmas season from 2 January until the Saturday after Epiphany.
Weekdays of the Easter season from Monday after the octave of Easter until the Saturday before Pentecost inclusive.
Weekdays in Ordinary Time.
For the Tridentine Calendar, the following table of precedence is followed:
Sundays are classed as Major (i.e. Greater) Sundays of the 1st or 2nd class; and Minor (i.e. Lesser, or Ordinary) Sundays;
Feasts, as doubles, simples, or commemorations;
Ferias, as major or minor.
The feasts called doubles are subdivided into: 1st class, 2nd class, greater, and lesser.
Each day in the calendar is specifically labeled to make the selection of precedence as simple as possible.