This is going to sound silly, but when does Sunday end for liturgical purposes? My parish offers an 8:30 p.m. Mass on Sundays (sort of the “last chance” Mass for the diocese), which I often attend. However, since I know the Saturday evening vigil (which is much earlier) counts as a “Sunday” Mass, shouldn’t the Sunday evening Mass count as a vigil also? And if it does, wouldn’t that count as a “Monday” Mass?
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Yes, the Mass on Saturday evening is the Mass for Sunday. One can fulfill the Sunday obligation anytime from evening on Saturday to the end of Sunday (midnight) because the liturgical day begins on the evening before.
The reason for this is important. In the biblical understanding of a day, a day begins at sunset. That’s the point of transition from one day to the next. It was also the Christian understanding of a day throughout most of history until very recently.
Because Sunday is so important, the Church has always maintained (in one or more ways) the concept of Sunday beginning at sunset on Saturday . In the 1983 Code of Canon Law, St John Paul the Great made universal what previous popes had allowed on a limited basis: that Catholics could fulfill their Sunday obligation by attending any Mass beginning in the evening of Saturday to the end of the calendar day on Sunday (ie midnight).
Is the decision up to the individual celebrant (as long as he uses the Missal for Sunday), or is there an actual “time” cutoff?
Thanks for your responses
No, it is not something to be decided by the celebrant. Anyone who attends Mass from the evening of Saturday to Sunday midnight fulfill the Sunday obligation.
It doesn’t matter which Mass text the priest chooses, the obligation is still fulfilled by anyone who attends.
It does bring up a different issue though: the Church does have rules for which Masses may be celebrated on which days–and these are very detailed rules. Only Solemnities (and all Sundays are Solemnities) begin the evening before. Other days begin at midnight.
The priest himself is obligated to follow the calendar and obligated to make the proper choices for the Mass—so saying the Mass of Monday on Sunday evening is not permitted. Yet, that’s the priest’s obligation to make the right choices. It does not affect whether-or-not anyone who attends fulfills the obligation.