Well, the Hijri date 27 Rabi Al Awwal 1236 corresponds to the Gregorian date Monday, 1 January 1821. This date lies in the third month of the Hijri year 1236 AH, which is Rabi Al-Awwal of 1236 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1236/03/27 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 1 January 1821 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Rabi Al Awwal 1236 AH to its equivalent Gregorian date.
ٱلَّذِينَ ءَامَنُوا۟ وَهَاجَرُوا۟ وَجَٰهَدُوا۟ فِى سَبِيلِ ٱللَّهِ بِأَمْوَٰلِهِمْ وَأَنفُسِهِمْ أَعْظَمُ دَرَجَةً عِندَ ٱللَّهِ ۚ وَأُو۟لَٰٓئِكَ هُمُ ٱلْفَآئِزُونَ
Those who believe, and have left their homes and striven with their wealth and their lives in Allah's way are of much greater worth in Allah's sight. These are they who are triumphant.
Surah At-Tawba(9:20)