Well, the Hijri date 22 Shawwal 1235 corresponds to the Gregorian date Tuesday, 1 August 1820. This date lies in the tenth month of the Hijri year 1235 AH, which is Shawwal of 1235 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1235/10/22 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 1 August 1820 to its equivalent Arabic date.
The following is the conversion of the Arabic date 22 Shawwal 1235 AH to its equivalent Gregorian date.
وَأَمَّا مَنْ أُوتِىَ كِتَٰبَهُۥ بِشِمَالِهِۦ فَيَقُولُ يَٰلَيْتَنِى لَمْ أُوتَ كِتَٰبِيَهْ
But as for him who is given his record in his left hand, he will say: Oh, would that I had not been given my book
Surah Al-Haaqqa(69:25)