Triduum

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The Triduum, or Paschal Triduum, is the span of three days at the center of the Christian year, running from the evening of Holy Thursday to the evening of Easter Sunday and commemorating the passion, death, burial, and resurrection of Jesus. The name is Latin for “three days.” In the older reckoning that shaped the liturgy, a day began at sunset, so the count runs from Thursday evening across Good Friday and Holy Saturday to the night of Easter — a single movement in three acts rather than three separate observances.

The structure is old. By the late fourth century a pilgrim named Egeria described the Jerusalem churches keeping these days with processions to the sites of the gospel events, hour by hour; her account is among the earliest detailed records of Christian liturgy that survives. What the later Western rite crystallized was a sequence of distinct services. The evening Mass of the Lord’s Supper on Holy Thursday recalls the last meal and, in many places, includes the washing of feet. Good Friday holds no Mass at all: the day is marked instead by a reading of the passion, the veneration of the cross, and communion from bread consecrated the day before — a deliberate austerity, the one day of the year the sacrifice is not re-enacted. Holy Saturday is kept in silence and waiting. The Triduum then turns at the Easter Vigil, held after nightfall, which opens in darkness with the kindling of a new fire and a single candle carried into the church before the announcement of the resurrection.

Theologically, the days are read as one event. The tradition holds that the death and rising of Christ are not two facts to be marked apart but the two faces of a single passage — the Pasch, the “passing over,” named after the Jewish Passover whose timing fixed the Christian feast and whose imagery of deliverance the early church took up. Eastern and Western Christianity keep the days on calendars that often diverge, and with different ceremonial, but share the conviction that this is the hinge on which the whole year, and the whole account, turns.

The reforms of the twentieth-century Western church restored the Triduum’s evening rhythm, returning services that had drifted into the morning to the hours the texts assign them, on the reasoning that the meaning lay partly in the timing — the supper at evening, the vigil in the night. The shape now widely kept is in that sense both very old and recently recovered. What it stages is a descent and a return held in tension across three days: the table, then the cross, then the empty silence, and only after the silence the fire.