Lectionary is divided into two cycles
Sunday
A, Matthew (2026)
B, Mark & John 6 (2027)
C, Luke (2025)
Easter, John
Weekdays
I, Mark, Matthew, then Luke (2025, 2027)
II, Mark, Matthew, then Luke (2026, 2028)
Scripture read at mass
Before 1970: 1% OT, 14% NT
After 1970: 17% OT, 71% NT