Well, the Hijri date 15 Rabi Al Awwal 1259 corresponds to the Gregorian date Friday, 14 April 1843. This date lies in the third month of the Hijri year 1259 AH, which is Rabi Al-Awwal of 1259 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1259/03/15 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 14 April 1843 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Rabi Al Awwal 1259 AH to its equivalent Gregorian date.
وَلَمَّا رَءَا ٱلْمُؤْمِنُونَ ٱلْأَحْزَابَ قَالُوا۟ هَٰذَا مَا وَعَدَنَا ٱللَّهُ وَرَسُولُهُۥ وَصَدَقَ ٱللَّهُ وَرَسُولُهُۥ ۚ وَمَا زَادَهُمْ إِلَّآ إِيمَٰنًۭا وَتَسْلِيمًۭا
And when the true believers saw the clans, they said: This is that which Allah and His messenger promised us. Allah and His messenger are true. It did but confirm them in their faith and resignation.
Surah Al-Ahzaab(33:22)