This feast occurs on Nov 9th

This Feast remembers the Anniversary of the Dedication of the Cathedral Church of Rome, the Mother Church of the Roman Rite.

The liturgical color is white (or gold)

The Proper of the mass is at DWM pg. 879

The Gloria is said, ut not the Creed.

The Preface is the Preface of the Dedication of a Church (DWM pg. 610)