Well, the Hijri date 20 Dhul Hijjah 1321 corresponds to the Gregorian date Monday, 7 March 1904. This date lies in the twelfth month of the Hijri year 1321 AH, which is Dhu Al-Hijjah of 1321 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1321/12/20 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 7 March 1904 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Dhul Hijjah 1321 AH to its equivalent Gregorian date.
قُلْ أَغَيْرَ ٱللَّهِ أَتَّخِذُ وَلِيًّۭا فَاطِرِ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَهُوَ يُطْعِمُ وَلَا يُطْعَمُ ۗ قُلْ إِنِّىٓ أُمِرْتُ أَنْ أَكُونَ أَوَّلَ مَنْ أَسْلَمَ ۖ وَلَا تَكُونَنَّ مِنَ ٱلْمُشْرِكِينَ
Say: Shall I choose for a protecting friend other than Allah, the Originator of the heavens and the earth, Who feedeth and is never fed? Say: I am ordered to be the first to surrender (unto Him). And be not thou (O Muhammad) of the idolaters.
Surah Al-An'aam(6:14)