In the circumstances indicated in the motu proprio Traditionis Custodes of 2021, the Catholic Church still permits celebrations of Mass in accordance with the 1962 edition of the Roman Missal. Such celebrations are governed not by the General Instruction but by the 1960 Code of Rubrics, particularly its section Rubricae generales Missalis Romani (General Rubrics of the Roman Missal), and by the Ritus servandus in celebratione Missae (Rite to be observed in celebration of Mass).
