Well, the Hijri date 25 Jumada Al Oula 1612 corresponds to the Gregorian date Saturday, 17 December 2185. This date lies in the fifth month of the Hijri year 1612 AH, which is Jumada Al-Awwal of 1612 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1612/05/25 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 17 December 2185 to its equivalent Arabic date.
The following is the conversion of the Arabic date 25 Jumada Al Oula 1612 AH to its equivalent Gregorian date.
أَمْ يَقُولُونَ تَقَوَّلَهُۥ ۚ بَل لَّا يُؤْمِنُونَ
Or say they: He hath invented it? Nay, but they will not believe!
Surah At-Tur(52:33)