Trinity Sunday in Western Christianity Date in the current year: May 26, 2024

There was no special office or day for the Holy Trinity in the early Church, until the heresy didn't start spreading. A special office was prepared with canticles, responses, a preface and hymns to be recited on Sundays. The Sunday after Pentecost was called a Dominica vacans and no special office was held. The feast for the Holy Trinity was ordered by Pope John XXII (1316-1334), but at that time it was ranked as a second class. Trinity Sunday was raised to the dignity of a primary feast of the first class. On July 24, 1911, Pope Pius X proclaimed the doctrine of the Trinity to the world and the feast officially followed Pentecost.

Trinity Sunday is celebrated in all Western Churches: Anglican, Roman Catholic, Lutheran, Methodist, Presbyterian and Baptist.

The earliest date that Trinity Sunday can fall on is May 17, the latest is June 20.