Well, the Hijri date 18 Dhul Qidah 1220 corresponds to the Gregorian date Thursday, 6 February 1806. This date lies in the eleventh month of the Hijri year 1220 AH, which is Dhu Al-Qidah of 1220 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1220/11/18 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 6 February 1806 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Dhul Qidah 1220 AH to its equivalent Gregorian date.
فَعَقَرُوهَا فَقَالَ تَمَتَّعُوا۟ فِى دَارِكُمْ ثَلَٰثَةَ أَيَّامٍۢ ۖ ذَٰلِكَ وَعْدٌ غَيْرُ مَكْذُوبٍۢ
But they hamstrung her, and then he said: Enjoy life in your dwelling-place three days! This is a threat that will not be belied.
Surah Hud(11:65)