Well, the Hijri date 2 Dhul Hijjah 1399 corresponds to the Gregorian date Tuesday, 23 October 1979. This date lies in the twelfth month of the Hijri year 1399 AH, which is Dhu Al-Hijjah of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1399/12/02 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 23 October 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 2 Dhul Hijjah 1399 AH to its equivalent Gregorian date.
ٱلَّذِينَ تَتَوَفَّىٰهُمُ ٱلْمَلَٰٓئِكَةُ ظَالِمِىٓ أَنفُسِهِمْ ۖ فَأَلْقَوُا۟ ٱلسَّلَمَ مَا كُنَّا نَعْمَلُ مِن سُوٓءٍۭ ۚ بَلَىٰٓ إِنَّ ٱللَّهَ عَلِيمٌۢ بِمَا كُنتُمْ تَعْمَلُونَ
Whom the angels cause to die while they are wronging themselves. Then will they make full submission (saying): We used not to do any wrong. Nay! Surely Allah is Knower of what ye used to do.
Surah An-Nahl(16:28)
Sahih al-Bukhari
Accepting Information Given by a Truthful Person
Chapter: Acceptance of the information given by one truthful person in about all matters
Narrated Malik:
We came to the Prophet (ﷺ) and we were young men nearly of equal ages and we stayed with him for twenty nights. Allah's Messenger (ﷺ) was a very kind man and when he realized our longing for our families, he asked us about those whom we had left behind. When we informed him, he said, "Go back to your families and stay with them and teach them (religion) and order them (to do good deeds). The Prophet (ﷺ) mentioned things some of which I remembered and some I did not. Then he said, "Pray as you have seen me praying, and when it is the time of prayer, one of you should pronounce the call (Adhan) for the prayer and the eldest of you should lead the prayer. "
Sahih al-Bukhari 7246