Bdieved, how late can one Daven Mincha? (According to Litvish Psak)
Answer:
The Mishnah Berurah rules that one can daven, bedieved, up to 13.5 minutes after shkiah.
However, in Eretz Yisrael both Rav Shlomo Zalman Auerbach and Rav Elyashiv, both z”l, ruled that one should not daven (even bedieved) past shkiah.
Best wishes.