Bible Dictionaries
Primo Die, Quo Trinitas

1910 New Catholic Dictionary

Hymn for Matins from the Octave of the Epiphany until the first Sunday of Lent, and from the Sunday nearest October 1, until Advent. It was written by Saint Gregory the Great, and has about 20 translations; the English title given is by J. Neale and others.

Bibliography Information
Entry for 'Primo Die, Quo Trinitas'. 1910 New Catholic Dictionary. https://www.studylight.org/​dictionaries/​eng/​ncd/​p/primo-die-quo-trinitas.html. 1910.