The Catholic church calendar marks Maundy Thursday (also known as Holy Thursday). This day commemorates the Last Supper of Jesus Christ with the Apostles, falling during Holy Week, immediately before Good Friday. It marks the end of the Lenten season.

Holy Thursday – Evening Mass of the Lord’s Supper: Commemorates the institution of the Eucharist and the priesthood.
Chrism Mass: Typically held in the morning in Catholic dioceses, where the Bishop blesses the holy oils.
Lent ends: The liturgical season of Lent officially concludes on the afternoon of Holy Thursday.