I read this in another thread:
This may also explain why things were written the way they were in our parish bulletin.
If the person went to the Christmas Vigil it could count for the Sunday Obligation, but then they should come back again at Midnight or Christmas Morning to fullfil the Christmas obligation.
Space is limited in the bulletin. So it may of been a short way to say that ONE Mass should not fulfil both obligations. That you should to go to 2 Masses: One for Sunday and One for Christmas.
[quote=Q and A from EWTN]Is it proper for Catholics to attend mass Sunday night December 24,2006, this year, to count for both Sunday and Christmas Obligation?
Answer by Fr. Robert J. Levis:
Bob, Yes, it is the minimal legal satisfaction for what the Church asks. But I surely don’t recommend nor commend it. Almighty God sent his only Son to live and die for us sinners; we ought to be more generous with Him. Fr. Bob Levis
My parish might be tellings us to do something beyond the “MINIMAL”… Refreshing, in my opinion!