Well, the Hijri date 17 Muharram 1284 corresponds to the Gregorian date Monday, 20 May 1867. This date lies in the first month of the Hijri year 1284 AH, which is Muharram of 1284 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1284/01/17 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 20 May 1867 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Muharram 1284 AH to its equivalent Gregorian date.
إِنَّمَا جُعِلَ ٱلسَّبْتُ عَلَى ٱلَّذِينَ ٱخْتَلَفُوا۟ فِيهِ ۚ وَإِنَّ رَبَّكَ لَيَحْكُمُ بَيْنَهُمْ يَوْمَ ٱلْقِيَٰمَةِ فِيمَا كَانُوا۟ فِيهِ يَخْتَلِفُونَ
The Sabbath was appointed only for those who differed concerning it, and lo! thy Lord will judge between them on the Day of Resurrection concerning that wherein they used to differ.
Surah An-Nahl(16:124)