και 2532 CONJ οτε 3753 ADV οψε 3796 ADV εγενετο 1096 5633 V-2ADI-3S εξεπορευετο 1607 5711 V-INI-3S εξω 1854 ADV της 3588 T-GSF πολεως 4172 N-GSF
Vincent's NT Word Studies
19. When evening was come (otan). Lit., whenever evening came on; not on the evening of the purging of the temple merely, but each day at evening.20-24. All the details are peculiar to Mark. Compare Matt. xxi. 20-22.
Robertson's NT Word Studies
11:19 {Every evening} (hotan oye egeneto). Literally, {whenever evening came on} or more exactly {whenever it became late}. The use of hotan (hote an) with the aorist indicative is like hopou an with the imperfect indicative (eiseporeueto) and hosoi an with the aorist indicative (heyanto) in #Mr 6:56. The use of an makes the clause more indefinite and general, as here, unless it renders it more definite, a curious result, but true. #Lu 21:37 has the accusative of extent of time, "the days,"the nights." The imperfect tense he (or they) would go (exeporeueto, exeporeuonto) out of the city suggests "whenever" as the meaning here.