Well, the Hijri date 20 Muharram 1239 corresponds to the Gregorian date Thursday, 25 September 1823. This date lies in the first month of the Hijri year 1239 AH, which is Muharram of 1239 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1239/01/20 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 25 September 1823 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Muharram 1239 AH to its equivalent Gregorian date.
فَمَنِ ٱفْتَرَىٰ عَلَى ٱللَّهِ ٱلْكَذِبَ مِنۢ بَعْدِ ذَٰلِكَ فَأُو۟لَٰٓئِكَ هُمُ ٱلظَّٰلِمُونَ
And whoever shall invent a falsehood after that concerning Allah, such will be wrong-doers.
Surah Aal-i-Imraan(3:94)
