# Elementa astronomia 45

Geminus, Elementa astronomia, Cap. VI.Περὶ ἡμέρας καὶ νυκτός.. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/geminus/elementa-astronomia/45

εἰ μὲν γὰρ ἐν ὅλοις τοῖς ζῳδίοις ἐγίνοντο 〈αἱ⟩ τροπαί, ἦν ἂν ἀληθὲς τὸ προειρημένον· νυνὶ δὲ τὰ μὲν τροπικὰ σημεῖα λόγῳ θεωρητά ἐστι, τὸ δ’ ὅλον ζῴδιον τὸ τοῦ Καρκίνου τὴν αὐτὴν ἀπόστασιν ἔχει ἀπὸ τοῦ θερινοῦ τροπικοῦ σημείου τοῖς Διδύμοις καὶ ὑπὸ τῶν αὐτῶν παραλλήλων ἐμπεριλαμβάνεται κύκλων καὶ ἐκ τοῦ αὐτοῦ τόπου τὴν ἀνατολὴν ποιεῖται καὶ εἰς τὸν αὐτὸν τόπον τὴν δύσιν· ἔστι γὰρ ἀλλήλοις κατὰ συζυγίαν.

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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/.