Well, the Hijri date 13 Rabi Al Thani 1514 corresponds to the Gregorian date Saturday, 7 October 2090. This date lies in the fourth month of the Hijri year 1514 AH, which is Rabi Al-Thani of 1514 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1514/04/13 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 7 October 2090 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Rabi Al Thani 1514 AH to its equivalent Gregorian date.
فَلَا وَرَبِّكَ لَا يُؤْمِنُونَ حَتَّىٰ يُحَكِّمُوكَ فِيمَا شَجَرَ بَيْنَهُمْ ثُمَّ لَا يَجِدُوا۟ فِىٓ أَنفُسِهِمْ حَرَجًۭا مِّمَّا قَضَيْتَ وَيُسَلِّمُوا۟ تَسْلِيمًۭا
But nay, by thy Lord, they will not believe (in truth) until they make thee judge of what is in dispute between them and find within themselves no dislike of that which thou decidest, and submit with full submission.
Surah An-Nisaa(4:65)