Well, the Hijri date 20 Rabi Al Thani 1405 corresponds to the Gregorian date Friday, 11 January 1985. This date lies in the fourth month of the Hijri year 1405 AH, which is Rabi Al-Thani of 1405 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1405/04/20 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 11 January 1985 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1405 AH to its equivalent Gregorian date.
وَلَوْلَآ إِذْ دَخَلْتَ جَنَّتَكَ قُلْتَ مَا شَآءَ ٱللَّهُ لَا قُوَّةَ إِلَّا بِٱللَّهِ ۚ إِن تَرَنِ أَنَا۠ أَقَلَّ مِنكَ مَالًۭا وَوَلَدًۭا
If only, when thou enteredst thy garden, thou hadst said: That which Allah willeth (will come to pass)! There is no strength save in Allah! Though thou seest me as less than thee in wealth and children,
Surah Al-Kahf(18:39)