(Annoor) 24 : 44
يُقَلِّبُ اللَّهُ اللَّيْلَ وَالنَّهَارَ ۚ إِنَّ فِي ذَٰلِكَ لَعِبْرَةً لِأُولِي الْأَبْصَارِ
the Lord Allah alternates the night and the day; indeed in that is a lesson for those who are insightful.
See explanation 3: 190-191 and 25: 62.