# Elementa astronomia 24-4

Geminus, Elementa astronomia, Cap. VIII. Περὶ μηνῶν.. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/geminus/elementa-astronomia/24-4

ὅθεν τὰ Ἴσια πρότερον μὲν ἤγετο κατὰ τὰς χειμερινὰς τροπάς, καὶ πρότερον δ’ ἔτι κατὰ τὰς θερινὰς τροπάς, ὡς καὶ Ἐρατοσθένης ἐν τῷ περὶ τῃς ὀκταετηρίδος ὑπομνήματι μνημονεύει, καὶ ἀχθήσεται [πάλιν] κατὰ φθινόπωρον καὶ κατὰ τὰς θερινὰς τροπὰς καὶ κατὰ τὸ ἔαρ καὶ ⟨πάλιν⟩ κατὰ τὰς χειμερινὰς τροπάς. ἐν ἔτεσι γὰρ ,αυξ′ ἅπασαν ἑορτὴν διελθεῖν δεῖ διὰ πασῶν τῶν τοῦ ἐνιαυτοῦ ὡρῶν καὶ πάλιν ἀποκατασταθῆναι ἐπὶ τὸν αὐτὸν καιρὸν τοῦ ἔτους.

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Geminus, Elementa astronomia, ed. Charles Manitius. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg1383.tlg001.local001/.