vigilia
Vigilia is a term derived from the Latin vigilia, meaning watchfulness or wakefulness. In English, it is used primarily in formal or liturgical contexts to denote a vigil or the period of being awake in preparation or anticipation. The word also appears in the names of religious observances preserved from Latin or Romance languages.
In Christian liturgy, a vigil is a service or observance held in the evening or night before
In secular usage, vigilia often denotes the eve of a festival or holiday, as in la vigilia
Cross-linguistically, vigilia appears in several Romance languages with meanings related to an eve or a vigil.
See also: Vigil; All Hallows’ Eve; Holy Saturday; Christmas Eve.