On: every psalm and song in the daily prayers uses today’s English. Off: all of them use the older “thee and thou”. Until you choose, the Songs of Zechariah, Mary and Simeon use today’s English, as most churches sing them. The Lord’s Prayer and the prayers for the dying show the form most people learned.
The calendar of commemorations tied to fixed dates — apostles, martyrs, teachers, renewers of the church. Distinguished from the temporal cycle, which follows Christ's life and moves with Easter.
In Church year — Seasons, festivals, and the calendar that orders them.