Well, the Hijri date 19 Shawwal 1251 corresponds to the Gregorian date Saturday, 6 February 1836. This date lies in the tenth month of the Hijri year 1251 AH, which is Shawwal of 1251 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1251/10/19 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 6 February 1836 to its equivalent Arabic date.
The following is the conversion of the Arabic date 19 Shawwal 1251 AH to its equivalent Gregorian date.
يَوْمَ نَدْعُوا۟ كُلَّ أُنَاسٍۭ بِإِمَٰمِهِمْ ۖ فَمَنْ أُوتِىَ كِتَٰبَهُۥ بِيَمِينِهِۦ فَأُو۟لَٰٓئِكَ يَقْرَءُونَ كِتَٰبَهُمْ وَلَا يُظْلَمُونَ فَتِيلًۭا
On the day when We shall summon all men with their record, whoso is given his book in his right hand - such will read their book and they will not be wronged a shred.
Surah Al-Israa(17:71)