Well, the Hijri date 13 Muharram 1491 corresponds to the Gregorian date Saturday, 17 March 2068. This date lies in the first month of the Hijri year 1491 AH, which is Muharram of 1491 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1491/01/13 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 17 March 2068 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Muharram 1491 AH to its equivalent Gregorian date.
أَمْ لَهُم مُّلْكُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ وَمَا بَيْنَهُمَا ۖ فَلْيَرْتَقُوا۟ فِى ٱلْأَسْبَٰبِ
Or is the kingdom of the heavens and the earth and all that is between them theirs? Then let them ascend by ropes!
Surah Saad(38:10)