Original sentence: 26 December: feast of  Saint Stephen.27 December: feast of  John the Apostle.28 December: feast of  the Holy Innocents.A considerable simplification occurred under Pope Pius XII with a decree dated 23 March 1955: all octaves in the Roman Rite were suppressed, including those in local calendars, except those of Christmas, Easter and Pentecost.The "Second Sunday of Easter", which concludes the Easter Octave is, since 30 April 2000, known also as Divine Mercy Sunday.The two surviving octaves already differed from other octaves in not repeating the same liturgy day after day for eight days.With the revision of the Roman Calendar in 1969, the octave of Pentecost was also removed
Edited sentence: 26 December: feast of Saint Stephen.27 December: feast of John the Apostle.28 December: feast of the Holy Innocents.Pope Pius XII simplified the calendar with a decree dated 23 March 1955: all octaves in the Roman Rite were suppressed, including those in local calendars, except those of Christmas, Easter and Pentecost.Since 30 April 2000, the "Second Sunday of Easter", which concludes the Easter Octave,  has also been called Divine Mercy Sunday.The Roman Catholic Church revised the Roman Calendar in 1969, removing the octave of Pentecost.The two surviving octaves differed from others as they did not repeat the same liturgy daily