Well, the Hijri date 29 Shawwal 1399 corresponds to the Gregorian date Thursday, 20 September 1979. This date lies in the tenth month of the Hijri year 1399 AH, which is Shawwal of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1399/10/29 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 September 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 29 Shawwal 1399 AH to its equivalent Gregorian date.
قَالَ ٱهْبِطَا مِنْهَا جَمِيعًۢا ۖ بَعْضُكُمْ لِبَعْضٍ عَدُوٌّۭ ۖ فَإِمَّا يَأْتِيَنَّكُم مِّنِّى هُدًۭى فَمَنِ ٱتَّبَعَ هُدَاىَ فَلَا يَضِلُّ وَلَا يَشْقَىٰ
He said: Go down hence, both of you, one of you a foe unto the other. But when there come unto you from Me a guidance, then whoso followeth My guidance, he will not go astray nor come to grief.
Surah Taa-Haa(20:123)