Well, the Hijri date 16 Shawwal 1615 corresponds to the Gregorian date Thursday, 2 April 2189. This date lies in the tenth month of the Hijri year 1615 AH, which is Shawwal of 1615 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1615/10/16 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 2 April 2189 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Shawwal 1615 AH to its equivalent Gregorian date.
كِتَٰبٌ أُنزِلَ إِلَيْكَ فَلَا يَكُن فِى صَدْرِكَ حَرَجٌۭ مِّنْهُ لِتُنذِرَ بِهِۦ وَذِكْرَىٰ لِلْمُؤْمِنِينَ
(It is) a Scripture that is revealed unto thee (Muhammad) - so let there be no heaviness in thy heart therefrom - that thou mayst warn thereby, and (it is) a Reminder unto believers.
Surah Al-A'raaf(7:2)