I class
Red
Traditional day of fast and abstinence (in the USA partial abstinence)
Proper Mass with additional lessons*; Gloria; sequence Veni Sancte Spiritus; Credo; Preface of the Holy Ghost; proper Communicantes and Hanc igitur
*The forma longior (obligatory in Ordinations and conventual Masses) has five lessons preceding the Epistle; the forma brevior (which may be used at all other Masses etiam in cantu) has one lesson preceding the Epistle
Matins: All from Pentecost; three lessons, however, are proper; one nocturn with only three psalms; Te Deum
Lauds: All from Pentecost; proper antiphon at Benedictus and proper oration; no preces
Prime: All from Pentecost (Sunday psalms, and psalm 53 takes the place of 117); proper oration
Terce: All from Pentecost (Hymn Veni Creator Spiritus); proper oration
Hours: All from Pentecost; proper oration
Change to second volume of the Breviary
I Vespers: Of the Feast of the Holy Trinity; Sunday psalms with Psalm 116 as the fifth psalm; remainder proper; the I Sunday after Pentecost is not commemorated
Compline: Of Sunday. Marian antiphon Salve Regina.
Paschaltide ends after None
The Angelus is resumed in the evening (Regina caeli in the morning and at noon)