Well, the Hijri date 21 Muharram 1158 corresponds to the Gregorian date Monday, 22 February 1745. This date lies in the first month of the Hijri year 1158 AH, which is Muharram of 1158 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1158/01/21 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 February 1745 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Muharram 1158 AH to its equivalent Gregorian date.
وَكَيْفَ تَصْبِرُ عَلَىٰ مَا لَمْ تُحِطْ بِهِۦ خُبْرًۭا
How canst thou bear with that whereof thou canst not compass any knowledge?
Surah Al-Kahf(18:68)