From hote and an; whenever (implying hypothesis or more or less uncertainty); also causatively (conjunctionally) inasmuch as -- as long (soon) as, that, + till, when(-soever), while.
see GREEK hote
see GREEK an
a. with the subjunctive present: Matthew 6:2, 5; Matthew 10:23; Mark 13:11 (here Rec. aorist); b. with the subjunctive aorist: equivalent to the Latinquandoacciderit,ut with subjunctive present, Matthew 5:11; Matthew 12:43; Matthew 13:32; Matthew 23:15; Matthew 24:32; Mark 4:15f, 29 (R G), 31f; 13:28; Luke 6:22, 26; Luke 8:13; Luke 11:24; Luke 12:54; Luke 21:30; John 2:10; John 10:4; John 16:21; 1 Timothy 5:11 (here L marginal reading future); Revelation 9:5. equivalent toquando with future perfect, Matthew 19:28; Matthew 21:40; Mark 8:38; Mark 9:9; Mark 12:23 (G Tr WH omit; L brackets the clause), 25; Luke 9:26; Luke 16:4, 9; Luke 17:10; John 4:25; John 7:31; John 13:19; John 14:29; John 15:26; John 16:4, 13, 21; John 21:18; Acts 23:35; Acts 24:22; Romans 11:27; 1 Corinthians 15:24 (here L T Tr WH present), c. According to the usage of later authors, a usage, however, not altogether unknown to the more elegant writers (Winers Grammar, 309 (289f); Buttmann, 222f (192f); (Tdf. Proleg., p. 124f; WHs Appendix, p. 171; for examples additional to these given by Winers Grammar, and Buttmann, as above see Sophocles' Lexicon, under the word; cf. Jebb in Vincent and Dickson's Handbook to Modern Greek, Appendix, § 78)), with the indicative; α. future: when (Matthew 5:11 Tdf.); Luke 13:28 T Tr text WH marginal reading; (1 Timothy 5:11 L marginal reading); as often as, Revelation 4:9 (cf. Bleek ad loc.). β. present: Mark 11:25 L T Tr WH; Mark 13:7 Tr text; (Luke 11:2 Tr marginal reading). γ. very rarely indeed, with the imperfect: as often as, (whensoever), ὅταν ἐθεώρουν, Mark 3:11 (Genesis 38:9; Exodus 17:11; 1 Samuel 17:34; see ἄν, II. 1). δ. As in Byzantine authors equivalent to ὅτε, when, with the indicative aorist: ὅταν ἤνοιξεν, Revelation 8:1 L T Tr WH; (add ὅταν ὀψέ ἐγένετο, Mark 11:19 T Tr text WH, cf. Buttmann, 223 (193); but others take this of customary action, whenever evening came (i. e. every evening, R. V.)). ὅταν, does not occur in the Epistles of Peter and Jude.