Well, the Hijri date 21 Rabi Al Thani 1382 corresponds to the Gregorian date Thursday, 20 September 1962. This date lies in the fourth month of the Hijri year 1382 AH, which is Rabi Al-Thani of 1382 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1382/04/21 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 20 September 1962 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1382 AH to its equivalent Gregorian date.
وَإِن يَمْسَسْكَ ٱللَّهُ بِضُرٍّۢ فَلَا كَاشِفَ لَهُۥٓ إِلَّا هُوَ ۖ وَإِن يَمْسَسْكَ بِخَيْرٍۢ فَهُوَ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌۭ
If Allah touch thee with affliction, there is none that can relieve therefrom save Him, and if He touch thee with good fortune (there is none that can impair it); for He is Able to do all things.
Surah Al-An'aam(6:17)
Sahih al-Bukhari
Fasting
Chapter: "Start observing Saum on seeing the crescent of Ramadan, and stop on seeing the crescent (of Shawwal)."
Narrated Ibn `Umar:
The Prophet (ﷺ) said, "The month is like this and this," (at the same time he showed the fingers of both his hands thrice) and left out one thumb on the third time.
Sahih al-Bukhari 1908