Well, the Hijri date 6 Safar 1399 corresponds to the Gregorian date Thursday, 4 January 1979. This date lies in the second month of the Hijri year 1399 AH, which is Safar of 1399 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1399/02/06 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 4 January 1979 to its equivalent Arabic date.
The following is the conversion of the Arabic date 6 Safar 1399 AH to its equivalent Gregorian date.
هَٰٓأَنتُمْ هَٰٓؤُلَآءِ جَٰدَلْتُمْ عَنْهُمْ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا فَمَن يُجَٰدِلُ ٱللَّهَ عَنْهُمْ يَوْمَ ٱلْقِيَٰمَةِ أَم مَّن يَكُونُ عَلَيْهِمْ وَكِيلًۭا
Ho! ye are they who pleaded for them in the life of the world. But who will plead with Allah for them on the Day of Resurrection, or who will then be their defender?
Surah An-Nisaa(4:109)