Well, the Hijri date 15 Dhul Qidah 1399 corresponds to the Gregorian date Saturday, 6 October 1979. This date lies in the eleventh month of the Hijri year 1399 AH, which is Dhu Al-Qidah of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1399/11/15 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 6 October 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Dhul Qidah 1399 AH to its equivalent Gregorian date.
قُل لِّمَن مَّا فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۖ قُل لِّلَّهِ ۚ كَتَبَ عَلَىٰ نَفْسِهِ ٱلرَّحْمَةَ ۚ لَيَجْمَعَنَّكُمْ إِلَىٰ يَوْمِ ٱلْقِيَٰمَةِ لَا رَيْبَ فِيهِ ۚ ٱلَّذِينَ خَسِرُوٓا۟ أَنفُسَهُمْ فَهُمْ لَا يُؤْمِنُونَ
Say: Unto whom belongeth whatsoever is in the heavens and the earth? Say: Unto Allah. He hath prescribed for Himself mercy, that He may bring you all together to the Day of Resurrection whereof there is no doubt. Those who ruin their souls will not believe.
Surah Al-An'aam(6:12)
Sahih al-Bukhari
(Statements made under) Coercion
Chapter: The oath of a man that his companion is his brother when he fears
Narrated Anas:
Allah's Messenger (ﷺ) said, "Help your brother whether he is an oppressor or an oppressed," A man said, "O Allah's Messenger (ﷺ)! I will help him if he is oppressed, but if he is an oppressor, how shall I help him?" The Prophet (ﷺ) said, "By preventing him from oppressing (others), for that is how to help him."
Sahih al-Bukhari 6952