Well, the Hijri date 21 Shawwal 1296 corresponds to the Gregorian date Tuesday, 7 October 1879. This date lies in the tenth month of the Hijri year 1296 AH, which is Shawwal of 1296 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1296/10/21 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 7 October 1879 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1296 AH to its equivalent Gregorian date.
وَإِن كَادُوا۟ لَيَفْتِنُونَكَ عَنِ ٱلَّذِىٓ أَوْحَيْنَآ إِلَيْكَ لِتَفْتَرِىَ عَلَيْنَا غَيْرَهُۥ ۖ وَإِذًۭا لَّٱتَّخَذُوكَ خَلِيلًۭا
And they indeed strove hard to beguile thee (Muhammad) away from that wherewith We have inspired thee, that thou shouldst invent other than it against Us; and then would they have accepted thee as a friend.
Surah Al-Israa(17:73)