Well, the Hijri date 18 Shaban 1257 corresponds to the Gregorian date Monday, 4 October 1841. This date lies in the eighth month of the Hijri year 1257 AH, which is Shaban of 1257 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1257/08/18 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 4 October 1841 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Shaban 1257 AH to its equivalent Gregorian date.
يَٰٓأَيُّهَا ٱلنَّاسُ إِنَّ وَعْدَ ٱللَّهِ حَقٌّۭ ۖ فَلَا تَغُرَّنَّكُمُ ٱلْحَيَوٰةُ ٱلدُّنْيَا ۖ وَلَا يَغُرَّنَّكُم بِٱللَّهِ ٱلْغَرُورُ
O mankind! Lo! the promise of Allah is true. So let not the life of the world beguile you, and let not the (avowed) beguiler beguile you with regard to Allah.
Surah Faatir(35:5)