Well, the Hijri date 26 Rajab 1181 corresponds to the Gregorian date Thursday, 17 December 1767. This date lies in the seventh month of the Hijri year 1181 AH, which is Rajab of 1181 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1181/07/26 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 December 1767 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Rajab 1181 AH to its equivalent Gregorian date.
ٱلَّذِى خَلَقَ سَبْعَ سَمَٰوَٰتٍۢ طِبَاقًۭا ۖ مَّا تَرَىٰ فِى خَلْقِ ٱلرَّحْمَٰنِ مِن تَفَٰوُتٍۢ ۖ فَٱرْجِعِ ٱلْبَصَرَ هَلْ تَرَىٰ مِن فُطُورٍۢ
Who hath created seven heavens in harmony. Thou (Muhammad) canst see no fault in the Beneficent One's creation; then look again: Canst thou see any rifts?
Surah Al-Mulk(67:3)