Well, the Hijri date 28 Rabi Al Thani 1616 corresponds to the Gregorian date Thursday, 8 October 2189. This date lies in the fourth month of the Hijri year 1616 AH, which is Rabi Al-Thani of 1616 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1616/04/28 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 8 October 2189 to its equivalent Arabic date.
The following is the conversion of the Arabic date 28 Rabi Al Thani 1616 AH to its equivalent Gregorian date.
قُلْ أَطِيعُوا۟ ٱللَّهَ وَأَطِيعُوا۟ ٱلرَّسُولَ ۖ فَإِن تَوَلَّوْا۟ فَإِنَّمَا عَلَيْهِ مَا حُمِّلَ وَعَلَيْكُم مَّا حُمِّلْتُمْ ۖ وَإِن تُطِيعُوهُ تَهْتَدُوا۟ ۚ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلْبَلَٰغُ ٱلْمُبِينُ
Say: Obey Allah and obey the messenger. But if ye turn away, then (it is) for him (to do) only that wherewith he hath been charged, and for you (to do) only that wherewith ye have been charged. If ye obey him, ye will go aright. But the messenger hath no other charge than to convey (the message) plainly.
Surah An-Noor(24:54)