Well, the Hijri date 8 Rajab 1399 corresponds to the Gregorian date Sunday, 3 June 1979. This date lies in the seventh month of the Hijri year 1399 AH, which is Rajab of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1399/07/08 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 3 June 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 8 Rajab 1399 AH to its equivalent Gregorian date.
وَدَخَلَ مَعَهُ ٱلسِّجْنَ فَتَيَانِ ۖ قَالَ أَحَدُهُمَآ إِنِّىٓ أَرَىٰنِىٓ أَعْصِرُ خَمْرًۭا ۖ وَقَالَ ٱلْءَاخَرُ إِنِّىٓ أَرَىٰنِىٓ أَحْمِلُ فَوْقَ رَأْسِى خُبْزًۭا تَأْكُلُ ٱلطَّيْرُ مِنْهُ ۖ نَبِّئْنَا بِتَأْوِيلِهِۦٓ ۖ إِنَّا نَرَىٰكَ مِنَ ٱلْمُحْسِنِينَ
And two young men went to prison with him. One of them said: I dreamed that I was pressing wine. The other said: I dreamed that I was carrying upon my head bread whereof the birds were eating. Announce unto us the interpretation, for we see thee of those good (at interpretation).
Surah Yusuf(12:36)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: The Statement of Allah Aza wa'jal: "Say: Do you wait for us except one of the two best things (martyrdom or victory)?..."
Narrated `Abdullah bin `Abbas:
That Abu Sufyan told him that Heraclius said to him, "I asked you about the outcome of your battles with him (i.e. the Prophet (ﷺ) ) and you told me that you fought each other with alternate success. So the Apostles are tested in this way but the ultimate victory is always theirs.
Sahih al-Bukhari 2804