Well, the Hijri date 20 Muharram 1181 corresponds to the Gregorian date Wednesday, 17 June 1767. This date lies in the first month of the Hijri year 1181 AH, which is Muharram of 1181 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1181/01/20 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 17 June 1767 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Muharram 1181 AH to its equivalent Gregorian date.
وَتَرَى ٱلْمَلَٰٓئِكَةَ حَآفِّينَ مِنْ حَوْلِ ٱلْعَرْشِ يُسَبِّحُونَ بِحَمْدِ رَبِّهِمْ ۖ وَقُضِىَ بَيْنَهُم بِٱلْحَقِّ وَقِيلَ ٱلْحَمْدُ لِلَّهِ رَبِّ ٱلْعَٰلَمِينَ
And thou (O Muhammad) seest the angels thronging round the Throne, hymning the praises of their Lord. And they are judged aright. And it is said: Praise be to Allah, the Lord of the Worlds!
Surah Az-Zumar(39:75)