Holy Day of Obligation in the USA
The First Thursday votive Mass of Our Lord Jesus Christ, eternal High Priest may not be celebrated; however, in churches and oratories in which special devotions are customarily held for the sanctification of the clergy, these special devotions may certainly still be held.
Mass of the Feast; Gloria; Credo; common preface.
Matins: All proper, including antiphons and psalms, and lessons of the 3 nocturns; Te Deum
Lauds: Proper antiphons, with Sunday psalms (1st scheme); remainder is proper
Prime: Proper antiphon, with Sunday psalms; Psalm 53 instead of 117
Hours: Proper antiphons, with Sunday psalms; remainder is proper
II Vespers: Proper antiphons, with Sunday psalms except Psalm 115 Credidi for fifth psalm; remainder is proper
Compline: Of Sunday