Vilna Gaon: It should say מה נשתנה הלילה הזאת (feminine) not masculine, יום is masculine, לילה is feminine!?! All other mitzvot are relegated to the day, why is סיפור יציאת מצרים relegated to the nighttime? Why does the Torah say God took us out of Egypt during the day – we left at night?
Shiur provided courtesy of Torah Anytime