Well, the Hijri date 12 Shawwal 1213 corresponds to the Gregorian date Monday, 18 March 1799. This date lies in the tenth month of the Hijri year 1213 AH, which is Shawwal of 1213 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1213/10/12 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 18 March 1799 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shawwal 1213 AH to its equivalent Gregorian date.
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَتَّخِذُوا۟ بِطَانَةًۭ مِّن دُونِكُمْ لَا يَأْلُونَكُمْ خَبَالًۭا وَدُّوا۟ مَا عَنِتُّمْ قَدْ بَدَتِ ٱلْبَغْضَآءُ مِنْ أَفْوَٰهِهِمْ وَمَا تُخْفِى صُدُورُهُمْ أَكْبَرُ ۚ قَدْ بَيَّنَّا لَكُمُ ٱلْءَايَٰتِ ۖ إِن كُنتُمْ تَعْقِلُونَ
O ye who believe! Take not for intimates others than your own folk, who would spare no pains to ruin you; they love to hamper you. Hatred is revealed by (the utterance of) their mouths, but that which their breasts hide is greater. We have made plain for you the revelations if ye will understand.
Surah Aal-i-Imraan(3:118)