﴿ ذَٰلِكَ بِأَنَّ ٱللَّهَ يُولِجُ ٱلَّيْلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيْلِ وَأَنَّ ٱللَّهَ سَمِيعٌۢ بَصِيرٌۭ ﴾

“Thus it is, because God [is almighty the One who] makes the night grow longer by shortening the day, and makes the day grow longer by shortening the night; and because God is all-hearing, all-seeing.”

Please check ayah 22:62 for complete tafsir.