Well, the Hijri date 26 Rajab 1237 corresponds to the Gregorian date Wednesday, 17 April 1822. This date lies in the seventh month of the Hijri year 1237 AH, which is Rajab of 1237 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1237/07/26 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 April 1822 to its equivalent Arabic date.
The following is the conversion of the Arabic date 26 Rajab 1237 AH to its equivalent Gregorian date.
ٱتَّبِعُوا۟ مَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُمْ وَلَا تَتَّبِعُوا۟ مِن دُونِهِۦٓ أَوْلِيَآءَ ۗ قَلِيلًۭا مَّا تَذَكَّرُونَ
(Saying): Follow that which is sent down unto you from your Lord, and follow no protecting friends beside Him. Little do ye recollect!
Surah Al-A'raaf(7:3)