Where does “τάνου” come from?

τάνου (Tsakonian) 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.

τάνου (Tsakonian): above