Well, the Hijri date 14 Rabi Al Thani 1412 corresponds to the Gregorian date Monday, 21 October 1991. This date lies in the fourth month of the Hijri year 1412 AH, which is Rabi Al-Thani of 1412 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1412/04/14 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 October 1991 to its equivalent Arabic date.
The following is the conversion of the Arabic date 14 Rabi Al Thani 1412 AH to its equivalent Gregorian date.
ثُمَّ أَوْرَثْنَا ٱلْكِتَٰبَ ٱلَّذِينَ ٱصْطَفَيْنَا مِنْ عِبَادِنَا ۖ فَمِنْهُمْ ظَالِمٌۭ لِّنَفْسِهِۦ وَمِنْهُم مُّقْتَصِدٌۭ وَمِنْهُمْ سَابِقٌۢ بِٱلْخَيْرَٰتِ بِإِذْنِ ٱللَّهِ ۚ ذَٰلِكَ هُوَ ٱلْفَضْلُ ٱلْكَبِيرُ
Then We gave the Scripture as inheritance unto those whom We elected of Our bondmen. But of them are some who wrong themselves and of them are some who are lukewarm, and of them are some who outstrip (others) through good deeds, by Allah's leave. That is the great favour!
Surah Faatir(35:32)