It is the Feast of the Holy Family.
It is called the "Sunday in the Octave of Christmas" and the Feast of the Holy Family is usually celebrated on that day.
Sunday is your only time to relax but you have to cook Christmas dinner!
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The most significant feast day is Pentecost as it is the birthday of the Church. It is followed by Easter and Christmas. This will be starting from the Easter Sunday and falling on the 50th day.
To see if Christmas was falling on a Sunday or not
In the calendar promulgated in 1969, the feast was moved to the Sunday within the Octave of Christmas, between Christmas and New Year's Day (both exclusive), or when there is no Sunday within the Octave (if both Christmas Day and New Year's Day are Sundays), it is held on 30 December, a Friday in such years.
The holy family of Jesus, Mary and Joseph
The duration of Sunday Feast is 3600.0 seconds.
Post-Christmas feast.
Sunday Feast was created on 2006-06-11.
The traditional date of the Three Kings is January 6 in the Roman Church but is now observed the 2nd Sunday after Christmas.
The three most important feast days in the Catholic Church - in order, top to bottom, are: 1.) Pentecost Sunday - the birthday of the Church. 2.) Easter Sunday - the Resurrection of Our Lord 3.) The Nativity of Our Lord - Christmas