This is among 4 Marian antiphons, with pursuing versicles and prayers, historically explained or sung right after night prayer, promptly before intending to rest. It is claimed in the conclusion of Eastertide until the beginning of Advent. This arrangement provides a bridge that intersperses strains from An additional Marian hymn, https://vitapronobis64208.life3dblog.com/30293374/what-does-vita-pro-nobis-mean