Well, the Hijri date 25 Shaban 1366 corresponds to the Gregorian date Sunday, 13 July 1947. This date lies in the eighth month of the Hijri year 1366 AH, which is Shaban of 1366 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1366/08/25 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 13 July 1947 to its equivalent Arabic date.
The following is the conversion of the Arabic date 25 Shaban 1366 AH to its equivalent Gregorian date.
وَمَنْ أَرَادَ ٱلْءَاخِرَةَ وَسَعَىٰ لَهَا سَعْيَهَا وَهُوَ مُؤْمِنٌۭ فَأُو۟لَٰٓئِكَ كَانَ سَعْيُهُم مَّشْكُورًۭا
And whoso desireth the Hereafter and striveth for it with the effort necessary, being a believer; for such, their effort findeth favour (with their Lord).
Surah Al-Israa(17:19)