Well, the Hijri date 13 Jumada Al Oula 1235 corresponds to the Gregorian date Saturday, 26 February 1820. This date lies in the fifth month of the Hijri year 1235 AH, which is Jumada Al-Awwal of 1235 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1235/05/13 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 26 February 1820 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Jumada Al Oula 1235 AH to its equivalent Gregorian date.
وَجَعَلْنَا فِى ٱلْأَرْضِ رَوَٰسِىَ أَن تَمِيدَ بِهِمْ وَجَعَلْنَا فِيهَا فِجَاجًۭا سُبُلًۭا لَّعَلَّهُمْ يَهْتَدُونَ
And We have placed in the earth firm hills lest it quake with them, and We have placed therein ravines as roads that haply they may find their way.
Surah Al-Anbiyaa(21:31)