Amphidromia

The Amphidromia (Greek:τὰ Ἀμφιδρόμια), in ancient Greece, was a ceremonial feast celebrated on the fifth or seventh day after the birth of a child.

It was a family festival of the Athenians, at which the newly born child was introduced into the family, and children of poorer families received their names. Wealthier families held a naming ceremony for their children on the tenth day called dekate. This ceremony, unlike the Amphidromia, was open to the public by invitation. No particular day was fixed for this solemnity; but it did not take place very soon after the birth of the child, for it was believed that most children died before the seventh day, and the solemnity was therefore generally deferred till after that period, that there might be at least some probability of the child remaining alive.