What is the Easter Triduum?
The Easter Triduum is the fancy terminology the Church uses to describe the time period in which we commemorate the passion, death, and resurrection of Jesus Christ. It is also known as the Paschal Triduum, Holy Triduum or simply “the Three Days” from its Latin root. The USCCB explains that the Triduum is one liturgy of Christ’s Paschal Mystery celebrated over three days. It commences with Mass of the Lord’s supper on Holy Thursday and comes to an end in the evening of Easter Sunday after commemorating Christ’s resurrection at the most important Mass of the Church year: the Easter Vigil on Holy Saturday.
The three parts of the one liturgy of the Easter Triduum are:
(1) Mass of the Lord’s Supper on Holy Thursday,
a. Washing of the feet
(2) A Good Friday Service that commemorates the Lord’s Passion and death, and
a. Adoration of the Holy Cross
(3) the Easter Vigil/Easter Sunday Mass that commemorates His resurrection.
a. Service of Light/Liturgy of Baptism
Each of these commemorate a part of the story of Christ’s Paschal mystery.