44يُقَلِّبُ اللَّهُ اللَّيلَ وَالنَّهارَ ۚ إِنَّ في ذٰلِكَ لَعِبرَةً لِأُولِي الأَبصارِZafar AnsariHe alternates the day and the night: there is indeed a lesson in it for those who have observing eyes.