Well, the Hijri date 1 Rabi Al Thani 1229 corresponds to the Gregorian date Tuesday, 22 March 1814. This date lies in the fourth month of the Hijri year 1229 AH, which is Rabi Al-Thani of 1229 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1229/04/01 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 22 March 1814 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Rabi Al Thani 1229 AH to its equivalent Gregorian date.
قَدْ خَسِرَ ٱلَّذِينَ قَتَلُوٓا۟ أَوْلَٰدَهُمْ سَفَهًۢا بِغَيْرِ عِلْمٍۢ وَحَرَّمُوا۟ مَا رَزَقَهُمُ ٱللَّهُ ٱفْتِرَآءً عَلَى ٱللَّهِ ۚ قَدْ ضَلُّوا۟ وَمَا كَانُوا۟ مُهْتَدِينَ
They are losers who besottedly have slain their children without knowledge, and have forbidden that which Allah bestowed upon them, inventing a lie against Allah. They indeed have gone astray and are not guided.
Surah Al-An'aam(6:140)