Well, the Hijri date 20 Rajab 1403 corresponds to the Gregorian date Tuesday, 3 May 1983. This date lies in the seventh month of the Hijri year 1403 AH, which is Rajab of 1403 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1403/07/20 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 3 May 1983 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rajab 1403 AH to its equivalent Gregorian date.
۞ ضَرَبَ ٱللَّهُ مَثَلًا عَبْدًۭا مَّمْلُوكًۭا لَّا يَقْدِرُ عَلَىٰ شَىْءٍۢ وَمَن رَّزَقْنَٰهُ مِنَّا رِزْقًا حَسَنًۭا فَهُوَ يُنفِقُ مِنْهُ سِرًّۭا وَجَهْرًا ۖ هَلْ يَسْتَوُۥنَ ۚ ٱلْحَمْدُ لِلَّهِ ۚ بَلْ أَكْثَرُهُمْ لَا يَعْلَمُونَ
Allah coineth a similitude: (on the one hand) a (mere) chattel slave, who hath control of nothing, and (on the other hand) one on whom we have bestowed a fair provision from Us, and he spendeth thereof secretly and openly. Are they equal? Praise be to Allah! But most of them know not.
Surah An-Nahl(16:75)