Where does “πάνω” come from?

πάνω (Greek) comes from Ancient Greek ἐπάνω, from Ancient Greek ἐπί, from Ancient Greek Ἡμέρα, from Ancient Greek ἦμαρ, from Proto-Hellenic ā́mər, from Proto-Indo-European h₂eh₃mr̥, from Proto-Indo-European h₂eh₃- — to be hot; to burn.

πάνω (Greek): above, on, up, upstairs