Well, the Hijri date 20 Rabi Al Thani 1380 corresponds to the Gregorian date Monday, 10 October 1960. This date lies in the fourth month of the Hijri year 1380 AH, which is Rabi Al-Thani of 1380 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1380/04/20 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 10 October 1960 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1380 AH to its equivalent Gregorian date.
لَا تَمُدَّنَّ عَيْنَيْكَ إِلَىٰ مَا مَتَّعْنَا بِهِۦٓ أَزْوَٰجًۭا مِّنْهُمْ وَلَا تَحْزَنْ عَلَيْهِمْ وَٱخْفِضْ جَنَاحَكَ لِلْمُؤْمِنِينَ
Strain not thine eyes toward that which We cause some wedded pairs among them to enjoin, and be not grieved on their account, and lower thy wing (in tenderness) for the believers.
Surah Al-Hijr(15:88)