If you miss your night prayer, make it up in the day. When the Prophet ﷺ missed his night prayer through sleep or illness, he would pray twelve rakʿah in the day. (Muslim). And: “Whoever sleeps through his portion (of night prayer) or part of it and recites it between Fajr and Ẓuhr, it is written for him as though he recited it in the night.” (Muslim).
العربية: عن عمر بن الخطاب رضي الله عنه أنّ رسول الله ﷺ قال: «مَن نام عن حِزبه أو عن شيءٍ منه فقرأه فيما بين صلاة الفجر وصلاة الظهر، كُتب له كأنما قرأه من الليل». (مسلم).
Missed your night prayer or wird? Pray or read it after Fajr up to Ẓuhr — the reward is preserved.