Well, the Hijri date 23 Ramadan 1399 corresponds to the Gregorian date Thursday, 16 August 1979. This date lies in the ninth month of the Hijri year 1399 AH, which is Ramadan of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1399/09/23 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 16 August 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Ramadan 1399 AH to its equivalent Gregorian date.
وَإِن كُلٌّۭ لَّمَّا جَمِيعٌۭ لَّدَيْنَا مُحْضَرُونَ
But all, without exception, will be brought before Us.
Surah Yaseen(36:32)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah: "Fight you the leaders of disbelief (chiefs of Quraish - Mushrikün of Makkah) for surely their oaths are nothing to them..." (V.9:12)
Narrated Zaid bin Wahb:
We were with Hudhaifa and he said, "None remains of the people described by this Verse (9.12), "Except three, and of the hypocrites except four." A bedouin said, "You the companions of Muhammad! Tell us (things) and we do not know that about those who break open our houses and steal our precious things? ' He (Hudhaifa) replied, "Those are Al Fussaq (rebellious wrongdoers) (not disbelievers or hypocrites). Really, none remains of them (hypocrite) but four, one of whom is a very old man who, if he drinks water, does not feel its coldness."
Sahih al-Bukhari 4658