Well, the Hijri date 20 Rabi Al Awwal 1180 corresponds to the Gregorian date Monday, 25 August 1766. This date lies in the third month of the Hijri year 1180 AH, which is Rabi Al-Awwal of 1180 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1180/03/20 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 25 August 1766 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Awwal 1180 AH to its equivalent Gregorian date.
وَقَالُوا۟ ٱلْحَمْدُ لِلَّهِ ٱلَّذِى صَدَقَنَا وَعْدَهُۥ وَأَوْرَثَنَا ٱلْأَرْضَ نَتَبَوَّأُ مِنَ ٱلْجَنَّةِ حَيْثُ نَشَآءُ ۖ فَنِعْمَ أَجْرُ ٱلْعَٰمِلِينَ
They say: Praise be to Allah, Who hath fulfilled His promise unto us and hath made us inherit the land, sojourning in the Garden where we will! So bounteous is the wage of workers.
Surah Az-Zumar(39:74)