Well, the Hijri date 15 Jumada Al Akhira 1399 corresponds to the Gregorian date Friday, 11 May 1979. This date lies in the sixth month of the Hijri year 1399 AH, which is Jumada Al-Thani of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1399/06/15 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 11 May 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Jumada Al Akhira 1399 AH to its equivalent Gregorian date.
وَزَكَرِيَّا وَيَحْيَىٰ وَعِيسَىٰ وَإِلْيَاسَ ۖ كُلٌّۭ مِّنَ ٱلصَّٰلِحِينَ
And Zachariah and John and Jesus and Elias. Each one (of them) was of the righteous.
Surah Al-An'aam(6:85)
Sahih al-Bukhari
Medicine
Chapter: The reward of a person who suffers from plague and remains patient
Narrated `Aisha:
(the wife of the Prophet) that she asked Allah's Messenger (ﷺ) about plague, and Allah's Messenger (ﷺ) informed her saying, "Plague was a punishment which Allah used to send on whom He wished, but Allah made it a blessing for the believers. None (among the believers) remains patient in a land in which plague has broken out and considers that nothing will befall him except what Allah has ordained for him, but that Allah will grant him a reward similar to that of a martyr."
Sahih al-Bukhari 5734