Well, the Hijri date 12 Shaban 1266 corresponds to the Gregorian date Saturday, 22 June 1850. This date lies in the eighth month of the Hijri year 1266 AH, which is Shaban of 1266 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1266/08/12 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 22 June 1850 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shaban 1266 AH to its equivalent Gregorian date.
أَوَلَمْ يَنظُرُوا۟ فِى مَلَكُوتِ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَمَا خَلَقَ ٱللَّهُ مِن شَىْءٍۢ وَأَنْ عَسَىٰٓ أَن يَكُونَ قَدِ ٱقْتَرَبَ أَجَلُهُمْ ۖ فَبِأَىِّ حَدِيثٍۭ بَعْدَهُۥ يُؤْمِنُونَ
Have they not considered the dominion of the heavens and the earth, and what things Allah hath created, and that it may be that their own term draweth nigh? In what fact after this will they believe?
Surah Al-A'raaf(7:185)