The Octave of Easter is the eight-day period (octave) in Eastertide that starts on Easter and concludes with the following Sunday. The Octave Day of Easter refers only to that day. Another name is White Sunday. It is also called Low Sunday, particularly in the Anglican Communion. It may be called Thomas Sunday, especially among Eastern Christians. On 30 April 2000, it was also designated as Divine Mercy Sunday (or the Feast of Mercy) by Pope John Paul II, who fulfilled the wish which Jesus revealed to saint Faustina Kowalska, saying that any Catholic who goes to Confession – the Sacrament of Penance – then receives the Holy Eucharist on this day will be liberated from any punishment after death.
Monday in the Octave of Easter
The Kingdom of Darkness