Easter Monday no relation Catholicism
The Octave of Easter is the eight-day period, or octave, that begins on Easter Sunday and ends with the following Sunday. In Christian churches that celebrate it, it marks the beginning of Eastertide. The first seven of these eight days are also collectively known as Easter Week.Days in the octave
Easter Sunday
Easter Monday
Easter Tuesday
Easter Wednesday
Easter Thursday
Easter Friday
Easter Saturday
Second Sunday of Easter (also known as the Octave Day of Easter, Divine Mercy Sunday, White Sunday (Latin: Dominica in albis), Quasimodo Sunday and Low Sunday  in the Roman Catholic Church)Liturgical celebration
Roman Rite Catholicism
In the Ordinariate Form of the Roman Rite of the Catholic Church, Easter is one of three Solemnities with Octaves, the other two being Christmas and Whitsun or Pentecost. In the Ordinary Form, Easter is one of two. The days of the octave are given the second-highest rank in the calendar (second only to the Paschal Triduum and Easter itself), ranking even above normal solemnities. The paschal sequence Victimae paschali laudes may be sung before the Gospel reading on each of these days.
The Gospel readings for each of middle days within the octave are taken from the various Scriptural accounts of the Resurrection of Jesus.
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