Well, the Hijri date 30 Rajab 1503 corresponds to the Gregorian date Sunday, 19 May 2080. This date lies in the seventh month of the Hijri year 1503 AH, which is Rajab of 1503 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1503/07/30 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 19 May 2080 to its equivalent Arabic date.
The following is the conversion of the Arabic date 30 Rajab 1503 AH to its equivalent Gregorian date.
وَلَقَدْ أَرْسَلْنَآ إِلَىٰ ثَمُودَ أَخَاهُمْ صَٰلِحًا أَنِ ٱعْبُدُوا۟ ٱللَّهَ فَإِذَا هُمْ فَرِيقَانِ يَخْتَصِمُونَ
And We verily sent unto Thamud their brother Salih, saying: Worship Allah. And lo! they (then became two parties quarrelling.
Surah An-Naml(27:45)