Well, the Hijri date 27 Ramadan 1266 corresponds to the Gregorian date Monday, 5 August 1850. This date lies in the ninth month of the Hijri year 1266 AH, which is Ramadan of 1266 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1266/09/27 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 5 August 1850 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Ramadan 1266 AH to its equivalent Gregorian date.
ثُمَّ يَتُوبُ ٱللَّهُ مِنۢ بَعْدِ ذَٰلِكَ عَلَىٰ مَن يَشَآءُ ۗ وَٱللَّهُ غَفُورٌۭ رَّحِيمٌۭ
Then afterward Allah will relent toward whom He will; for Allah is Forgiving, Merciful.
Surah At-Tawba(9:27)