Well, the Hijri date 16 Ramadan 1399 corresponds to the Gregorian date Thursday, 9 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 1399/09/16 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 9 August 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Ramadan 1399 AH to its equivalent Gregorian date.
فَمَن تَوَلَّىٰ بَعْدَ ذَٰلِكَ فَأُو۟لَٰٓئِكَ هُمُ ٱلْفَٰسِقُونَ
Then whosoever after this shall turn away: they will be miscreants.
Surah Aal-i-Imraan(3:82)
Sahih al-Bukhari
Beginning of Creation
Chapter: The characteristics of Paradise, and the fact that it has already been created
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Allah said, "I have prepared for My Pious slaves things which have never been seen by an eye, or heard by an ear, or imagined by a human being." If you wish, you can recite this Verse from the Holy Qur'an:--"No soul knows what is kept hidden for them, of joy as a reward for what they used to do." (32.17)
Sahih al-Bukhari 3244