Well, the Hijri date 20 Jumada Al Akhira 1383 corresponds to the Gregorian date Wednesday, 6 November 1963. This date lies in the sixth month of the Hijri year 1383 AH, which is Jumada Al-Thani of 1383 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1383/06/20 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 6 November 1963 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Jumada Al Akhira 1383 AH to its equivalent Gregorian date.
حَتَّىٰٓ إِذَا جَآءَ أَمْرُنَا وَفَارَ ٱلتَّنُّورُ قُلْنَا ٱحْمِلْ فِيهَا مِن كُلٍّۢ زَوْجَيْنِ ٱثْنَيْنِ وَأَهْلَكَ إِلَّا مَن سَبَقَ عَلَيْهِ ٱلْقَوْلُ وَمَنْ ءَامَنَ ۚ وَمَآ ءَامَنَ مَعَهُۥٓ إِلَّا قَلِيلٌۭ
(Thus it was) till, when Our commandment came to pass and the oven gushed forth water, We said: Load therein two of every kind, a pair (the male and female), and thy household, save him against whom the word hath gone forth already, and those who believe. And but a few were they who believed with him.
Surah Hud(11:40)