Reply To: whens the latest i can say kriyas shema al hamita????

S”A 235:3- Lechatchila one must say Krias Shema at Tzeis (M”B- because of zrizin makdimin leMitzvos) and its zman is until Chatozs (M”B- and if you say it later then you are violating the words of the Chachamim) but if you violated this and delayed past chatzos, then you are yotzei as long as you say it before Alos (M”B- that’s if you did it on purpose but if you were oneis you can even be yotzei if you say it before Neitz).