Baptism

Those seeking baptism for their children in the Orthodox Christian Church are welcome to attend services and discuss this with the Priest.

Children of Orthodox families are normally baptized shortly after birth. Converts to Orthodoxy are usually formally baptized into the Orthodox Church and though exceptions are sometimes made. Those who have left Orthodoxy and adopted a new religion, if they return to their Orthodox roots, are usually received back into the church through the mystery of Chrismation.
[from en.wikipedia.org/wiki/Orthodox_Church]