Well, the Hijri date 9 Shawwal 1399 corresponds to the Gregorian date Friday, 31 August 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 Friday without any doubt. The Arabic date 1399/10/09 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 31 August 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 9 Shawwal 1399 AH to its equivalent Gregorian date.
قَالَ كَذَٰلِكَ أَتَتْكَ ءَايَٰتُنَا فَنَسِيتَهَا ۖ وَكَذَٰلِكَ ٱلْيَوْمَ تُنسَىٰ
He will say: So (it must be). Our revelations came unto thee but thou didst forget them. In like manner thou art forgotten this Day.
Surah Taa-Haa(20:126)
Sahih al-Bukhari
Wedlock, Marriage (Nikaah)
Chapter: If the guardian himself is the suitor
Narrated Sahl bin Sa`d:
While we were sitting in the company of the Prophet (ﷺ) a woman came to him and presented herself (for marriage) to him. The Prophet (ﷺ) looked at her, lowering his eyes and raising them, but did not give a reply. One of his companions said, "Marry her to me O Allah's Messenger (ﷺ)!" The Prophet (ﷺ) asked (him), "Have you got anything?" He said, "I have got nothing." The Prophet (ﷺ) said, "Not even an iron ring?" He Sa`d, "Not even an iron ring, but I will tear my garment into two halves and give her one half and keep the other half." The Prophet; said, "No. Do you know some of the Qur'an (by heart)?" He said, "Yes." The Prophet (ﷺ) said, "Go, I have agreed to marry her to you with what you know of the Qur'an (as her Mahr)."
Sahih al-Bukhari 5132