Well, the Hijri date 11 Muharram 1226 corresponds to the Gregorian date Monday, 4 February 1811. This date lies in the first month of the Hijri year 1226 AH, which is Muharram of 1226 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1226/01/11 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 4 February 1811 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Muharram 1226 AH to its equivalent Gregorian date.
فَمَنْ أَظْلَمُ مِمَّنِ ٱفْتَرَىٰ عَلَى ٱللَّهِ كَذِبًا أَوْ كَذَّبَ بِـَٔايَٰتِهِۦٓ ۚ أُو۟لَٰٓئِكَ يَنَالُهُمْ نَصِيبُهُم مِّنَ ٱلْكِتَٰبِ ۖ حَتَّىٰٓ إِذَا جَآءَتْهُمْ رُسُلُنَا يَتَوَفَّوْنَهُمْ قَالُوٓا۟ أَيْنَ مَا كُنتُمْ تَدْعُونَ مِن دُونِ ٱللَّهِ ۖ قَالُوا۟ ضَلُّوا۟ عَنَّا وَشَهِدُوا۟ عَلَىٰٓ أَنفُسِهِمْ أَنَّهُمْ كَانُوا۟ كَٰفِرِينَ
Who doeth greater wrong than he who inventeth a lie concerning Allah or denieth Our tokens. (For such) their appointed portion of the Book (of destiny) reacheth them till, when Our messengers come to gather them, they say: Where (now) is that to which ye cried beside Allah? They say: They have departed from us. And they testify against themselves that they were disbelievers.
Surah Al-A'raaf(7:37)