Well, the Hijri date 26 Rabi Al Awwal 1178 corresponds to the Gregorian date Saturday, 22 September 1764. This date lies in the third month of the Hijri year 1178 AH, which is Rabi Al-Awwal of 1178 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1178/03/26 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 22 September 1764 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Rabi Al Awwal 1178 AH to its equivalent Gregorian date.
ذَٰلِكَ لِيَعْلَمَ أَنِّى لَمْ أَخُنْهُ بِٱلْغَيْبِ وَأَنَّ ٱللَّهَ لَا يَهْدِى كَيْدَ ٱلْخَآئِنِينَ
(Then Joseph said: I asked for) this, that he (my lord) may know that I betrayed him not in secret, and that surely Allah guideth not the snare of the betrayers.
Surah Yusuf(12:52)