Ὁμηρικοὶ ὕμνοι
aka Homērikoì húmnoi
Homeric Hymns

The Homeric Hymns are a collection of thirty-three ancient Greek hymns and one epigram. The hymns praise deities of the Greek pantheon and retell mythological stories, often involving a deity's birth, their acceptance among the gods on Mount Olympus, or the establishment of their cult. In antiquity, the hymns were generally, though not universally, attributed to the poet Homer: modern scholarship has established that most date to the seventh and sixth centuries BCE, though some are more recent and the latest, the Hymn to Ares, may have been composed as late as the fifth century CE.— Wikipedia
Once attributed to Homer, modern scholars believe they were written by various authors from different ages. The oldest hymns might be roughly contemporary to Homer's epics.
graeco-roman