Well, the Hijri date 3 Rajab 1299 corresponds to the Gregorian date Saturday, 20 May 1882. This date lies in the seventh month of the Hijri year 1299 AH, which is Rajab of 1299 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1299/07/03 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 20 May 1882 to its equivalent Arabic date.
The following is the conversion of the Arabic date 3 Rajab 1299 AH to its equivalent Gregorian date.
إِن تَتُوبَآ إِلَى ٱللَّهِ فَقَدْ صَغَتْ قُلُوبُكُمَا ۖ وَإِن تَظَٰهَرَا عَلَيْهِ فَإِنَّ ٱللَّهَ هُوَ مَوْلَىٰهُ وَجِبْرِيلُ وَصَٰلِحُ ٱلْمُؤْمِنِينَ ۖ وَٱلْمَلَٰٓئِكَةُ بَعْدَ ذَٰلِكَ ظَهِيرٌ
If ye twain turn unto Allah repentant, (ye have cause to do so) for your hearts desired (the ban); and if ye aid one another against him (Muhammad) then lo! Allah, even He, is his Protecting Friend, and Gabriel and the righteous among the believers; and furthermore the angels are his helpers.
Surah At-Tahrim(66:4)
