Well, the Hijri date 4 Safar 1509 corresponds to the Gregorian date Sunday, 23 September 2085. This date lies in the second month of the Hijri year 1509 AH, which is Safar of 1509 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1509/02/04 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 23 September 2085 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Safar 1509 AH to its equivalent Gregorian date.
وَلَقَدْ أَرْسَلْنَا نُوحًۭا وَإِبْرَٰهِيمَ وَجَعَلْنَا فِى ذُرِّيَّتِهِمَا ٱلنُّبُوَّةَ وَٱلْكِتَٰبَ ۖ فَمِنْهُم مُّهْتَدٍۢ ۖ وَكَثِيرٌۭ مِّنْهُمْ فَٰسِقُونَ
And We verily sent Noah and Abraham and placed the prophethood and the scripture among their seed, and among them there is he who goeth right, but many of them are evil-livers.
Surah Al-Hadid(57:26)