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.
وَوَرِثَ سُلَيْمَٰنُ دَاوُۥدَ ۖ وَقَالَ يَٰٓأَيُّهَا ٱلنَّاسُ عُلِّمْنَا مَنطِقَ ٱلطَّيْرِ وَأُوتِينَا مِن كُلِّ شَىْءٍ ۖ إِنَّ هَٰذَا لَهُوَ ٱلْفَضْلُ ٱلْمُبِينُ
And Solomon was David's heir. And he said: O mankind! Lo! we have been taught the language of birds, and have been given (abundance) of all things. This surely is evident favour.
Surah An-Naml(27:16)