Before 1955, the Holy Week liturgies (Palm Sunday, Holy Thursday, Good Friday, and the Easter Vigil) were typically celebrated in the morning hours, often at times that made participation difficult for the working laity.
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Prior to 1955, the Catholic Church followed the traditional Roman Missal, which contained the rubrics and prayers for the celebration of Mass. However, as the Church sought to renew and revitalize its liturgical practices, Pope Pius XII introduced the Ordo Hebdomadae Sanctae Instauratus, which reformed the liturgy of the Sacred Paschal Week. This document aimed to restore the ancient traditions and rubrics of the Paschal Week, while also introducing some modernizations. Before 1955, the Holy Week liturgies (Palm Sunday,