Does an Orthodox Mass count for Sunday obligation?

[aidanbradypop]

We have a small Orthodox Mission here and I am really wanting to attend a Mass there to see what its like. Does an Orthodox Mass count as far as my Sunday obligation or do I need to attend Mass at my parish as well?

 

[Fr.Charles_Grondin]

Can. 1248 §1. A person who assists at a Mass celebrated anywhere in a Catholic rite either on the feast day itself or in the evening of the preceding day satisfies the obligation of participating in the Mass.

1993 Directory for the Application of Principles and Norms on Ecumenism

1. Since the celebration of the Eucharist on the Lord’s Day is the foundation and centre of the whole liturgical year, Catholics—but those of Eastern Churches according to their own Law—are obliged to attend Mass on that day and on days of precept. It is not advisable therefore to organize ecumenical services on Sundays, and it must be remembered that even when Catholics participate in ecumenical services or in services of other Churches and ecclesial Communities, the obligation of participating at Mass on these days remains.

A person must attend a Catholic Mass in order to fulfill the Sunday obligation. Thus an Orthodox Divine Liturgy (Mass) would not fulfill the Sunday obligation.

For further reading:
Orthodox Liturgies & Sunday Obligation by Jimmy Akin