Well, the Hijri date 13 Shawwal 1406 corresponds to the Gregorian date Friday, 20 June 1986. This date lies in the tenth month of the Hijri year 1406 AH, which is Shawwal of 1406 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1406/10/13 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 20 June 1986 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1406 AH to its equivalent Gregorian date.
ٱلْمُلْكُ يَوْمَئِذٍ ٱلْحَقُّ لِلرَّحْمَٰنِ ۚ وَكَانَ يَوْمًا عَلَى ٱلْكَٰفِرِينَ عَسِيرًۭا
The Sovereignty on that day will be the True (Sovereignty) belonging to the Beneficent One, and it will be a hard day for disbelievers.
Surah Al-Furqaan(25:26)