Well, the Hijri date 6 Ramadan 1231 corresponds to the Gregorian date Tuesday, 30 July 1816. This date lies in the ninth month of the Hijri year 1231 AH, which is Ramadan of 1231 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1231/09/06 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 30 July 1816 to its equivalent Arabic date.
The following is the conversion of the Arabic date 6 Ramadan 1231 AH to its equivalent Gregorian date.
لَّعَنَهُ ٱللَّهُ ۘ وَقَالَ لَأَتَّخِذَنَّ مِنْ عِبَادِكَ نَصِيبًۭا مَّفْرُوضًۭا
Whom Allah cursed, and he said: Surely I will take of Thy bondmen an appointed portion,
Surah An-Nisaa(4:118)