Well, the Hijri date 15 Shawwal 1616 corresponds to the Gregorian date Sunday, 21 March 2190. This date lies in the tenth month of the Hijri year 1616 AH, which is Shawwal of 1616 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1616/10/15 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 21 March 2190 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Shawwal 1616 AH to its equivalent Gregorian date.
إِن يَنصُرْكُمُ ٱللَّهُ فَلَا غَالِبَ لَكُمْ ۖ وَإِن يَخْذُلْكُمْ فَمَن ذَا ٱلَّذِى يَنصُرُكُم مِّنۢ بَعْدِهِۦ ۗ وَعَلَى ٱللَّهِ فَلْيَتَوَكَّلِ ٱلْمُؤْمِنُونَ
If Allah is your helper none can overcome you, and if He withdraw His help from you, who is there who can help you after Him? In Allah let believers put their trust.
Surah Aal-i-Imraan(3:160)