Paschal Triduum
The Paschal Triduum ( Latin: "Triduum Paschale" ) , Holy Triduum ( Latin: "Triduum Sacrum" ) , or Easter Triduum , or the Three Days , is the period of three days that begins with the liturgy on the evening of Maundy Thursday , reaches its high point in the Easter Vigil , and closes with evening prayer on Easter Sunday . 
<triplet> Easter Vigil <subj> Paschal Triduum <obj> part of