ويوم يناديهم فيقول ماذا اجبتم المرسلين

وَيَوْمَ يُنَادِيهِمْ فَيَقُولُ مَاذَآ أَجَبْتُمُ ٱلْمُرْسَلِينَ

These verses are a reminder of Allah's might and power. The very natural phenomenon that dictates a huge part of our human physiology (night and day-circadian rhythm).  Our power is in submitting to his power. Control is an illusion. The night and day doesn't necessarily, according to some scholars, refer to just times of the day but also to stages of our spirituality and times of hardship and ease. The 'will you not listen' and 'will you not see' correspond to night (when one can't see) and day (when on can see).
Verse 74 and 75 really demonstrate the justice of Allah, in that even in wrong-doing, people have an opportunity to make a case. Of course, if they are sinful without repentance, the case is clear, but the fact that the opportunity is present reminds me of how Allah will never punish a people until they have made the conscious decision to reject their messenger and cast ignorance over their minds and hearts.

Reflections on Surah Al-Qasas Ayah 65