Changes

'''Holy Days of Obligation''' in the [[Catholic Church]] are commemorations that include a duty to attend [[Mass]] at any of the more than 220,000 Catholic parishes<ref>[http://cara.georgetown.edu/CARAServices/requestedchurchstats.html Center for Applied Research in the Apostolate]</ref> around the world.

'''Holy Days of Obligation''' in the [[Catholic Church]] are commemorations that include a duty to attend [[Mass]] at any of the more than 220,000 Catholic parishes<ref>[http://cara.georgetown.edu/CARAServices/requestedchurchstats.html Center for Applied Research in the Apostolate]</ref> around the world.

The holy days of obligation change slightly each year because if they fall on or near a Sunday, then they may not be included for a particular year):

The holy days of obligation change slightly each year.  Because Catholics are required to attend Mass on all Sundays, if a Holy Day of Obligation falls on Sunday, there is no requirement to attend an additional mass.  Additionally in the United States, if a Holy Day of Obligation other than Immaculate Conception or Christmas falls on a Saturday or Monday, mass attendance is not required.  Finally, some Holy Days of Obligation are transferred to Sunday in most but not all dioceses, meaning that the days of required mass attendance may vary from diocese to diocese.

In 2012, a total of four:

In 2012, a total of four: