Well, the Hijri date 20 Rabi Al Awwal 1399 corresponds to the Gregorian date Saturday, 17 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 Saturday without any doubt. The Arabic date 1399/03/20 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 17 February 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Awwal 1399 AH to its equivalent Gregorian date.
لِلْفُقَرَآءِ ٱلْمُهَٰجِرِينَ ٱلَّذِينَ أُخْرِجُوا۟ مِن دِيَٰرِهِمْ وَأَمْوَٰلِهِمْ يَبْتَغُونَ فَضْلًۭا مِّنَ ٱللَّهِ وَرِضْوَٰنًۭا وَيَنصُرُونَ ٱللَّهَ وَرَسُولَهُۥٓ ۚ أُو۟لَٰٓئِكَ هُمُ ٱلصَّٰدِقُونَ
And (it is) for the poor fugitives who have been driven out from their homes and their belongings, who seek bounty from Allah and help Allah and His messenger. They are the loyal.
Surah Al-Hashr(59:8)
Sahih al-Bukhari
Invocations
Chapter: To invoke for Allah's Blessings upon the children
Narrated As-Sa'ib bin Yazid:
My aunt took me to Allah's Messenger (ﷺ) and said, "O Allah's Messenger (ﷺ)! My sister's son is sick." So he passed his hand over my head and invoked for Allah's blessing upon me and then performed the ablution. I drank from the water of his ablution and I stood behind him and looked at his Khatam (the seal of Prophethood) between his shoulders (and its size was) like the button of a tent.
Sahih al-Bukhari 6352