Well, the Hijri date 4 Muharram 1615 corresponds to the Gregorian date Saturday, 28 June 2188. This date lies in the first month of the Hijri year 1615 AH, which is Muharram of 1615 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1615/01/04 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 28 June 2188 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Muharram 1615 AH to its equivalent Gregorian date.
وَجَعَلْنَٰهُمْ أَئِمَّةًۭ يَهْدُونَ بِأَمْرِنَا وَأَوْحَيْنَآ إِلَيْهِمْ فِعْلَ ٱلْخَيْرَٰتِ وَإِقَامَ ٱلصَّلَوٰةِ وَإِيتَآءَ ٱلزَّكَوٰةِ ۖ وَكَانُوا۟ لَنَا عَٰبِدِينَ
And We made them chiefs who guide by Our command, and We inspired in them the doing of good deeds and the right establishment of worship and the giving of alms, and they were worshippers of Us (alone).
Surah Al-Anbiyaa(21:73)