Well, the Hijri date 1 Ramadan 1287 corresponds to the Gregorian date Thursday, 24 November 1870. This date lies in the ninth month of the Hijri year 1287 AH, which is Ramadan of 1287 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1287/09/01 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 24 November 1870 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Ramadan 1287 AH to its equivalent Gregorian date.
وَمَا تَنقِمُ مِنَّآ إِلَّآ أَنْ ءَامَنَّا بِـَٔايَٰتِ رَبِّنَا لَمَّا جَآءَتْنَا ۚ رَبَّنَآ أَفْرِغْ عَلَيْنَا صَبْرًۭا وَتَوَفَّنَا مُسْلِمِينَ
Thou takest vengeance on us only forasmuch as we believed the tokens of our Lord when they came unto us. Our Lord! Vouchsafe unto us steadfastness and make us die as men who have surrendered (unto Thee).
Surah Al-A'raaf(7:126)