Well, the Hijri date 25 Rajab 1615 corresponds to the Gregorian date Monday, 12 January 2189. This date lies in the seventh month of the Hijri year 1615 AH, which is Rajab of 1615 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1615/07/25 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 12 January 2189 to its equivalent Arabic date.
The following is the conversion of the Arabic date 25 Rajab 1615 AH to its equivalent Gregorian date.
فَعَقَرُوا۟ ٱلنَّاقَةَ وَعَتَوْا۟ عَنْ أَمْرِ رَبِّهِمْ وَقَالُوا۟ يَٰصَٰلِحُ ٱئْتِنَا بِمَا تَعِدُنَآ إِن كُنتَ مِنَ ٱلْمُرْسَلِينَ
So they hamstrung the she-camel, and they flouted the commandment of their Lord, and they said: O Salih! Bring upon us that thou threatenest if thou art indeed of those sent (from Allah).
Surah Al-A'raaf(7:77)