Roman Catholic Baptism
In the Roman Catholic Church, baptism takes place during mass, after the last mass on a Sunday morning or on Sunday afternoon.
At least one of the parents must be a practising Catholic. The child must have one godparent, but can have two. It is usual for the parents to attend a couple of preparation sessions with the priest before the baptism.
The baptism ceremony is very similar to the Church of England. Baptism is one of the seven sacraments of the Catholic Church. Traditionally infants were baptised as soon as possible after they were born; today the ceremony often takes place a little later but the baby may well be younger than is usual within the Anglican Church. The child should wear a white garment and in addition to being baptised with water will be anointed with oil (chrism).
For more information please see the Roman Catholic Church website