Well, the Hijri date 20 Shawwal 1385 corresponds to the Gregorian date Thursday, 10 February 1966. This date lies in the tenth month of the Hijri year 1385 AH, which is Shawwal of 1385 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1385/10/20 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 10 February 1966 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shawwal 1385 AH to its equivalent Gregorian date.
حِكْمَةٌۢ بَٰلِغَةٌۭ ۖ فَمَا تُغْنِ ٱلنُّذُرُ
Effective wisdom; but warnings avail not.
Surah Al-Qamar(54:5)