Well, the Hijri date 1 Shawwal 1511 corresponds to the Gregorian date Thursday, 22 April 2088. This date lies in the tenth month of the Hijri year 1511 AH, which is Shawwal of 1511 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1511/10/01 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 22 April 2088 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Shawwal 1511 AH to its equivalent Gregorian date.
وَلَقَدْ أَتَوْا۟ عَلَى ٱلْقَرْيَةِ ٱلَّتِىٓ أُمْطِرَتْ مَطَرَ ٱلسَّوْءِ ۚ أَفَلَمْ يَكُونُوا۟ يَرَوْنَهَا ۚ بَلْ كَانُوا۟ لَا يَرْجُونَ نُشُورًۭا
And indeed they have passed by the township whereon was rained the fatal rain. Can it be that they have not seen it? Nay, but they hope for no resurrection.
Surah Al-Furqaan(25:40)