Well, the Hijri date 13 Ramadan 1321 corresponds to the Gregorian date Wednesday, 2 December 1903. This date lies in the ninth month of the Hijri year 1321 AH, which is Ramadan of 1321 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1321/09/13 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 2 December 1903 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Ramadan 1321 AH to its equivalent Gregorian date.
إِن تُبْدُوا۟ ٱلصَّدَقَٰتِ فَنِعِمَّا هِىَ ۖ وَإِن تُخْفُوهَا وَتُؤْتُوهَا ٱلْفُقَرَآءَ فَهُوَ خَيْرٌۭ لَّكُمْ ۚ وَيُكَفِّرُ عَنكُم مِّن سَيِّـَٔاتِكُمْ ۗ وَٱللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌۭ
If ye publish your almsgiving, it is well, but if ye hide it and give it to the poor, it will be better for you, and will atone for some of your ill-deeds. Allah is Informed of what ye do.
Surah Al-Baqara(2:271)