Well, the Hijri date 23 Shaban 1287 corresponds to the Gregorian date Thursday, 17 November 1870. This date lies in the eighth month of the Hijri year 1287 AH, which is Shaban of 1287 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1287/08/23 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 17 November 1870 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Shaban 1287 AH to its equivalent Gregorian date.
وَأَلْقِ مَا فِى يَمِينِكَ تَلْقَفْ مَا صَنَعُوٓا۟ ۖ إِنَّمَا صَنَعُوا۟ كَيْدُ سَٰحِرٍۢ ۖ وَلَا يُفْلِحُ ٱلسَّاحِرُ حَيْثُ أَتَىٰ
Throw that which is in thy right hand! It will eat up that which they have made. Lo! that which they have made is but a wizard's artifice, and a wizard shall not be successful to whatever point (of skill) he may attain.
Surah Taa-Haa(20:69)