Well, the Hijri date 16 Rajab 1605 corresponds to the Gregorian date Thursday, 22 April 2179. This date lies in the seventh month of the Hijri year 1605 AH, which is Rajab of 1605 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1605/07/16 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 22 April 2179 to its equivalent Arabic date.
The following is the conversion of the Arabic date 16 Rajab 1605 AH to its equivalent Gregorian date.
لَهُۥ مَقَالِيدُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۖ يَبْسُطُ ٱلرِّزْقَ لِمَن يَشَآءُ وَيَقْدِرُ ۚ إِنَّهُۥ بِكُلِّ شَىْءٍ عَلِيمٌۭ
His are the keys of the heavens and the earth. He enlargeth providence for whom He will and straiteneth (it for whom He will). Lo! He is Knower of all things.
Surah Ash-Shura(42:12)