Well, the Hijri date 21 Shawwal 1267 corresponds to the Gregorian date Monday, 18 August 1851. This date lies in the tenth month of the Hijri year 1267 AH, which is Shawwal of 1267 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1267/10/21 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 18 August 1851 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1267 AH to its equivalent Gregorian date.
وَلَقَدْ أَرْسَلْنَا نُوحًۭا وَإِبْرَٰهِيمَ وَجَعَلْنَا فِى ذُرِّيَّتِهِمَا ٱلنُّبُوَّةَ وَٱلْكِتَٰبَ ۖ فَمِنْهُم مُّهْتَدٍۢ ۖ وَكَثِيرٌۭ مِّنْهُمْ فَٰسِقُونَ
And We verily sent Noah and Abraham and placed the prophethood and the scripture among their seed, and among them there is he who goeth right, but many of them are evil-livers.
Surah Al-Hadid(57:26)