Well, the Hijri date 1 Rabi Al Thani 1291 corresponds to the Gregorian date Sunday, 17 May 1874. This date lies in the fourth month of the Hijri year 1291 AH, which is Rabi Al-Thani of 1291 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1291/04/01 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 May 1874 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rabi Al Thani 1291 AH to its equivalent Gregorian date.
مَّا ٱلْمَسِيحُ ٱبْنُ مَرْيَمَ إِلَّا رَسُولٌۭ قَدْ خَلَتْ مِن قَبْلِهِ ٱلرُّسُلُ وَأُمُّهُۥ صِدِّيقَةٌۭ ۖ كَانَا يَأْكُلَانِ ٱلطَّعَامَ ۗ ٱنظُرْ كَيْفَ نُبَيِّنُ لَهُمُ ٱلْءَايَٰتِ ثُمَّ ٱنظُرْ أَنَّىٰ يُؤْفَكُونَ
The Messiah, son of Mary, was no other than a messenger, messengers (the like of whom) had passed away before him. And his mother was a saintly woman. And they both used to eat (earthly) food. See how We make the revelations clear for them, and see how they are turned away!
Surah Al-Maaida(5:75)