This Hymn is a 12th century imitation of the Salve Festa Dies, originally a Processional hymn sung on Easter Sunday. The text of this hymn comes from a manuscript, in the collection of Corpus Christi College Cambridge.
Salve, sancta dies, celebri dignissima laude, Qua, Dunstane pater, caelica scandis ovans.
Second version, to be sung on the Feast day
We do not have a translation of this hymn.