do take note that from Vespers tonight till Vespers next Saturday, the Invitatory, Antiphons and Responsory are on page 0-67: Pentecost (and Its Octave). Festivals that occur within this octave:
Monday - May 24: Esther (p. 1298)
Tuesday - May 25 - Bede the Venerable, Theologian (p. 1299)
The Treasury returns to the civil calendar on May 31 (which the three-year lectionary observes as Visitation, but not the 1-year - we wait till July 2).