Well, the Hijri date 21 Shawwal 1204 corresponds to the Gregorian date Saturday, 3 July 1790. This date lies in the tenth month of the Hijri year 1204 AH, which is Shawwal of 1204 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1204/10/21 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 3 July 1790 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1204 AH to its equivalent Gregorian date.
فَأَخْرَجَ لَهُمْ عِجْلًۭا جَسَدًۭا لَّهُۥ خُوَارٌۭ فَقَالُوا۟ هَٰذَآ إِلَٰهُكُمْ وَإِلَٰهُ مُوسَىٰ فَنَسِىَ
Then he produced for them a calf, of saffron hue, which gave forth a lowing sound. And they cried: This is your god and the god of Moses, but he hath forgotten.
Surah Taa-Haa(20:88)