Well, the Hijri date 13 Jumada Al Oula 1379 corresponds to the Gregorian date Friday, 13 November 1959. This date lies in the fifth month of the Hijri year 1379 AH, which is Jumada Al-Awwal of 1379 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1379/05/13 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.
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The following is the conversion of the Gregorian date 13 November 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Jumada Al Oula 1379 AH to its equivalent Gregorian date.
وَفِى عَادٍ إِذْ أَرْسَلْنَا عَلَيْهِمُ ٱلرِّيحَ ٱلْعَقِيمَ
And in (the tribe of) A'ad (there is a portent) when we sent the fatal wind against them.
Surah Adh-Dhaariyat(51:41)