Well, the Hijri date 20 Shawwal 1304 corresponds to the Gregorian date Monday, 11 July 1887. This date lies in the tenth month of the Hijri year 1304 AH, which is Shawwal of 1304 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1304/10/20 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 11 July 1887 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Shawwal 1304 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ كَفَرُوا۟ يُنَادَوْنَ لَمَقْتُ ٱللَّهِ أَكْبَرُ مِن مَّقْتِكُمْ أَنفُسَكُمْ إِذْ تُدْعَوْنَ إِلَى ٱلْإِيمَٰنِ فَتَكْفُرُونَ
Lo! (on that day) those who disbelieve are informed by proclamation: Verily Allah's abhorrence is more terrible than your abhorrence one of another, when ye were called unto the faith but did refuse.
Surah Ghafir(40:10)