Well, the Hijri date 4 Muharram 1290 corresponds to the Gregorian date Monday, 3 March 1873. This date lies in the first month of the Hijri year 1290 AH, which is Muharram of 1290 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1290/01/04 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 3 March 1873 to its equivalent Arabic date.
The following is the conversion of the Arabic date 4 Muharram 1290 AH to its equivalent Gregorian date.
وَإِذْ أَوْحَيْتُ إِلَى ٱلْحَوَارِيِّۦنَ أَنْ ءَامِنُوا۟ بِى وَبِرَسُولِى قَالُوٓا۟ ءَامَنَّا وَٱشْهَدْ بِأَنَّنَا مُسْلِمُونَ
And when I inspired the disciples, (saying): Believe in Me and in My messenger, they said: We believe. Bear witness that we have surrendered (unto Thee) "we are muslims".
Surah Al-Maaida(5:111)