Well, the Hijri date 21 Dhul Qidah 1311 corresponds to the Gregorian date Friday, 25 May 1894. This date lies in the eleventh month of the Hijri year 1311 AH, which is Dhu Al-Qidah of 1311 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1311/11/21 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 25 May 1894 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Dhul Qidah 1311 AH to its equivalent Gregorian date.
۞ وَمِنْ أَهْلِ ٱلْكِتَٰبِ مَنْ إِن تَأْمَنْهُ بِقِنطَارٍۢ يُؤَدِّهِۦٓ إِلَيْكَ وَمِنْهُم مَّنْ إِن تَأْمَنْهُ بِدِينَارٍۢ لَّا يُؤَدِّهِۦٓ إِلَيْكَ إِلَّا مَا دُمْتَ عَلَيْهِ قَآئِمًۭا ۗ ذَٰلِكَ بِأَنَّهُمْ قَالُوا۟ لَيْسَ عَلَيْنَا فِى ٱلْأُمِّيِّۦنَ سَبِيلٌۭ وَيَقُولُونَ عَلَى ٱللَّهِ ٱلْكَذِبَ وَهُمْ يَعْلَمُونَ
Among the People of the Scripture there is he who, if thou trust him with a weight of treasure, will return it to thee. And among them there is he who, if thou trust him with a piece of gold, will not return it to thee unless thou keep standing over him. That is because they say: We have no duty to the Gentiles. They speak a lie concerning Allah knowingly.
Surah Aal-i-Imraan(3:75)