Well, the Hijri date 20 Shaban 1366 corresponds to the Gregorian date Tuesday, 8 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 Tuesday without any doubt. The Arabic date 1366/08/20 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 8 July 1947 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shaban 1366 AH to its equivalent Gregorian date.
وَعَجِبُوٓا۟ أَن جَآءَهُم مُّنذِرٌۭ مِّنْهُمْ ۖ وَقَالَ ٱلْكَٰفِرُونَ هَٰذَا سَٰحِرٌۭ كَذَّابٌ
And they marvel that a warner from among themselves hath come unto them, and the disbelievers say: This is a wizard, a charlatan.
Surah Saad(38:4)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The marriage of the Prophet (saws) with Khadija رضي الله عنها and her superiority
Narrated Abu Huraira:
Gabriel came to the Prophet (ﷺ) and said, "O Allah's Messenger (ﷺ)! This is Khadija coming to you with a dish having meat soup (or some food or drink). When she reaches you, greet her on behalf of her Lord (i.e. Allah) and on my behalf, and give her the glad tidings of having a Qasab palace in Paradise wherein there will be neither any noise nor any fatigue (trouble) . "
Sahih al-Bukhari 3820