The Day from Night to Night Yawm — The Day examines the Qur’anic structure of the complete daily cycle from Al-Layl — the Night — through the ordered phases of Al-Nahār and back to Al-Layl. It distinguishes the night-side phases, Al-Falaq, Al-Fajr, early morning, sunrise, forenoon, noon, afternoon, sunset, evening, and Al-Shafaq — the rosy dusk. The study identifies the paired markers of the cycle, anchors the three named Ṣalāt positions, and presents supporting mathematical observations, including a 475-form Yawm corpus in 437 ayat. Part of the MESSAGE Series by Mahmoud Ahmed / محمود أحمد.
Mahmoud Ahmed (Thu,) studied this question.