Well, the Hijri date 13 Rabi Al Awwal 1409 corresponds to the Gregorian date Sunday, 23 October 1988. This date lies in the third month of the Hijri year 1409 AH, which is Rabi Al-Awwal of 1409 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1409/03/13 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 October 1988 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Rabi Al Awwal 1409 AH to its equivalent Gregorian date.
يَوْمَ تَجِدُ كُلُّ نَفْسٍۢ مَّا عَمِلَتْ مِنْ خَيْرٍۢ مُّحْضَرًۭا وَمَا عَمِلَتْ مِن سُوٓءٍۢ تَوَدُّ لَوْ أَنَّ بَيْنَهَا وَبَيْنَهُۥٓ أَمَدًۢا بَعِيدًۭا ۗ وَيُحَذِّرُكُمُ ٱللَّهُ نَفْسَهُۥ ۗ وَٱللَّهُ رَءُوفٌۢ بِٱلْعِبَادِ
On the Day when every soul will find itself confronted with all that it hath done of good and all that it hath done of evil (every soul) will long that there might be a mighty space of distance between it and that (evil). Allah biddeth you beware of Him. And Allah is Full of Pity for (His) bondmen.
Surah Aal-i-Imraan(3:30)