Well, the Hijri date 13 Shawwal 1228 corresponds to the Gregorian date Friday, 8 October 1813. This date lies in the tenth month of the Hijri year 1228 AH, which is Shawwal of 1228 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1228/10/13 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 8 October 1813 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1228 AH to its equivalent Gregorian date.
وَيَعْبُدُونَ مِن دُونِ ٱللَّهِ مَا لَا يَضُرُّهُمْ وَلَا يَنفَعُهُمْ وَيَقُولُونَ هَٰٓؤُلَآءِ شُفَعَٰٓؤُنَا عِندَ ٱللَّهِ ۚ قُلْ أَتُنَبِّـُٔونَ ٱللَّهَ بِمَا لَا يَعْلَمُ فِى ٱلسَّمَٰوَٰتِ وَلَا فِى ٱلْأَرْضِ ۚ سُبْحَٰنَهُۥ وَتَعَٰلَىٰ عَمَّا يُشْرِكُونَ
They worship beside Allah that which neither hurteth them nor profiteth them, and they say: These are our intercessors with Allah. Say: Would ye inform Allah of (something) that He knoweth not in the heavens or in the earth? Praised be He and High Exalted above all that ye associate (with Him)!
Surah Yunus(10:18)