Well, the Hijri date 21 Shawwal 1328 corresponds to the Gregorian date Monday, 24 October 1910. This date lies in the tenth month of the Hijri year 1328 AH, which is Shawwal of 1328 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1328/10/21 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 24 October 1910 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1328 AH to its equivalent Gregorian date.
وَأَوْفُوا۟ بِعَهْدِ ٱللَّهِ إِذَا عَٰهَدتُّمْ وَلَا تَنقُضُوا۟ ٱلْأَيْمَٰنَ بَعْدَ تَوْكِيدِهَا وَقَدْ جَعَلْتُمُ ٱللَّهَ عَلَيْكُمْ كَفِيلًا ۚ إِنَّ ٱللَّهَ يَعْلَمُ مَا تَفْعَلُونَ
Fulfil the covenant of Allah when ye have covenanted, and break not your oaths after the asseveration of them, and after ye have made Allah surety over you. Lo! Allah knoweth what ye do.
Surah An-Nahl(16:91)