Well, the Hijri date 22 Muharram 1390 corresponds to the Gregorian date Sunday, 29 March 1970. This date lies in the first month of the Hijri year 1390 AH, which is Muharram of 1390 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1390/01/22 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 29 March 1970 to its equivalent Arabic date.
The following is the conversion of the Arabic date 22 Muharram 1390 AH to its equivalent Gregorian date.
قَالُوا۟ نَعْبُدُ أَصْنَامًۭا فَنَظَلُّ لَهَا عَٰكِفِينَ
They said: We worship idols, and are ever devoted unto them.
Surah Ash-Shu'araa(26:71)