1. of Time, correlated to πότε, much like ὅτε:

2. with the indicative, when , Lat. quando, (Homer): —; εἰς ὁπότε, with future, when, by what time , λέγειν εἰς ὁπότ᾽ ἔσται (Aeschines Orator)

3. with the optative in reference to the past, whenever , to express an event that has often occurred, ὁπότε Κρήτηθεν ἵκοιτο (Iliad by Homer), etc.:—;also in oratio obliqua, (Sophocles Tragicus), etc.

4. in indirect phrases, ἴδμεν, ὁππότε Τηλέμαχος νεῖται when he is to return , (Odyssey by Homer); with optative, δέγμενος ὁππότε ναυσὶν ἐφορμηθεῖεν (Iliad by Homer)

5. in causal sense, for that, because, since , like Lat. quando for quoniam , (Theognis Elegiacus), etc.: so ὁπότε γε, Lat. quandoquidem, (Sophocles Tragicus) (ML)

when