1 verse has
يَوْمَئِذٍۢ
in Edition Uthmani / Al-Qasas (The Stories)

66:28فَعَمِيَتْ عَلَيْهِمُ ٱلْأَنۢبَآءُ يَوْمَئِذٍۢ فَهُمْ لَا يَتَسَآءَلُونَ