Well, the Hijri date 15 Rabi Al Awwal 1399 corresponds to the Gregorian date Monday, 12 February 1979. This date lies in the third month of the Hijri year 1399 AH, which is Rabi Al-Awwal of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1399/03/15 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 12 February 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1399 AH to its equivalent Gregorian date.
وَلَمَّا بَلَغَ أَشُدَّهُۥٓ ءَاتَيْنَٰهُ حُكْمًۭا وَعِلْمًۭا ۚ وَكَذَٰلِكَ نَجْزِى ٱلْمُحْسِنِينَ
And And when he reached his prime We gave him wisdom and knowledge. Thus We reward the good.
Surah Yusuf(12:22)
Sahih al-Bukhari
Belief
Chapter: To observe fasting (according to Islamic teachings)] during the month of Ramadan (sincerely and faithfully) hoping for Allah's Reward only, is a part of faith
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Whoever observes fasts during the month of Ramadan out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven."
Sahih al-Bukhari 38