Maariv

Answer

Answered by Chaim Yisrael Abadi

You can daven any time after Shkiah. You need to remember to say Shema again if you said it before 25 minutes after Shkiah. (at least thats what my father told me years ago) You still can't do anything till the time that you wait for Shabbos to end. (72, 60, 45, etc.) CYA