Passage: He attended the liceum of classics at the archdiocosean seminary of Genoa, and was ordained to the priesthood on 29 June 1966 by Cardinal Giuseppe Siri. While a priest in Genoa, he received a degree in philosophy from the University of Genoa, served as professor of metaphysics and contemporary atheism at the Theological Faculty of Northern Italy, and led the archdiocesan liturgical and catechesis offices.  He was once the diocesan representative to the FUCI (the Italian Catholic Federation of University Students) and led efforts for the pastoral care of students in the region.

Question: When was he ordained?
29 June 1966