Arktouros

Εὖτ’ ἂν δ’ ἑξήκοντα μετὰ τροπὰς ἠελίοιο
χειμέρι’ ἐκτελέσῃ Ζεὺς ἤματα, δή ῥα τότ’ ἀστὴρ
Ἀρκτοῦρος προλιπὼν ἱερὸν ῥόον Ὠκεανοῖο
πρῶτον παμφαίνων ἐπιτέλλεται ἀκροκνέφαιος.
τὸν δὲ μέτ’ ὀρθογόη Πανδιονὶς ὦρτο χελιδὼν
ἐς φάος ἀνθρώποις, ἔαρος νέον ἱσταμένοιο.
τὴν φθάμενος οἴνας περιταμνέμεν· ὣς γὰρ ἄμεινον.
(Hesiod, Erga kai Hēmerai 564-570)

When Zeus has finished sixty wintry days after the solstice, then the star Arcturus leaves the holy stream of Ocean and first rises brilliant at dusk. After him the shrilly wailing daughter of Pandion, the swallow, appears to men when spring is just beginning. Before she comes, prune the vines, for it is best so. (tr. Hugh G. Evelyn-White)