Well, the Hijri date 22 Shawwal 1213 corresponds to the Gregorian date Thursday, 28 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 Thursday without any doubt. The Arabic date 1213/10/22 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 28 March 1799 to its equivalent Arabic date.
The following is the conversion of the Arabic date 22 Shawwal 1213 AH to its equivalent Gregorian date.
وَقَالَ لِلَّذِى ظَنَّ أَنَّهُۥ نَاجٍۢ مِّنْهُمَا ٱذْكُرْنِى عِندَ رَبِّكَ فَأَنسَىٰهُ ٱلشَّيْطَٰنُ ذِكْرَ رَبِّهِۦ فَلَبِثَ فِى ٱلسِّجْنِ بِضْعَ سِنِينَ
And he said unto him of the twain who he knew would be released: Mention me in the presence of thy lord. But Satan caused him to forget to mention it to his lord, so he (Joseph) stayed in prison for some years.
Surah Yusuf(12:42)