Well, the Hijri date 13 Rajab 1606 corresponds to the Gregorian date Saturday, 8 April 2180. This date lies in the seventh month of the Hijri year 1606 AH, which is Rajab of 1606 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1606/07/13 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 8 April 2180 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Rajab 1606 AH to its equivalent Gregorian date.
لَّا تَرَىٰ فِيهَا عِوَجًۭا وَلَآ أَمْتًۭا
Wherein thou seest neither curve nor ruggedness.
Surah Taa-Haa(20:107)