قَالَ لَا تَثْرِيبَ عَلَيْكُمُ ٱلْيَوْمَ يَغْفِرُ ٱللَّهُ لَكُمْ وَهُوَ أَرْحَمُ ٱلرَّٰحِمِينَ
He said, "No blame will there be upon you today. Allah will forgive you; and He is the most merciful of the merciful."
Saheeh International
The verse for a given day is derived from the date itself, so it is the same for everyone and can be checked. It carries no claim of being especially apt for that day — it is a way of meeting a verse you did not choose.