Well, the Hijri date 21 Rabi Al Thani 1209 corresponds to the Gregorian date Friday, 14 November 1794. This date lies in the fourth month of the Hijri year 1209 AH, which is Rabi Al-Thani of 1209 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1209/04/21 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 14 November 1794 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1209 AH to its equivalent Gregorian date.
مَن يُضْلِلِ ٱللَّهُ فَلَا هَادِىَ لَهُۥ ۚ وَيَذَرُهُمْ فِى طُغْيَٰنِهِمْ يَعْمَهُونَ
Those whom Allah sendeth astray, there is no guide for them. He leaveth them to wander blindly on in their contumacy.
Surah Al-A'raaf(7:186)