Well, the Hijri date 13 Shawwal 1383 corresponds to the Gregorian date Wednesday, 26 February 1964. This date lies in the tenth month of the Hijri year 1383 AH, which is Shawwal of 1383 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1383/10/13 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 26 February 1964 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1383 AH to its equivalent Gregorian date.
وَإِن يَمْسَسْكَ ٱللَّهُ بِضُرٍّۢ فَلَا كَاشِفَ لَهُۥٓ إِلَّا هُوَ ۖ وَإِن يَمْسَسْكَ بِخَيْرٍۢ فَهُوَ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌۭ
If Allah touch thee with affliction, there is none that can relieve therefrom save Him, and if He touch thee with good fortune (there is none that can impair it); for He is Able to do all things.
Surah Al-An'aam(6:17)