Days of Obligation

Periodically throughout the year, the Church celebrates certain days called holy days of obligation. These are seen as occasions of supreme importance where a Christian is obligated to attend Mass. It is in fact a mortal sin to skip Mass on these days without serious reason. Examples of such occasions would be December 8 (Immaculate Conception) and August 15 (the Assumption of Mary). But did you know: every Sunday is actually a holy day of obligation. This means we are obligated to go to Mass every Sunday, not just whatever day is most convenient to us.