ذٰلِكَ بِاَنَّ اللّٰهَ يُوۡلِجُ الَّيۡلَ فِىۡ النَّهَارِ وَيُوۡلِجُ النَّهَارَ فِىۡ الَّيۡلِ وَاَنَّ اللّٰهَ سَمِيۡعٌۢ بَصِيۡرٌ
That is because Allah causes the night to enter into the day and causes the day to enter into the night, and indeed Allah is All-Hearing, All-Seeing.