Well, the Hijri date 17 Rabi Al Thani 1404 corresponds to the Gregorian date Friday, 20 January 1984. This date lies in the fourth month of the Hijri year 1404 AH, which is Rabi Al-Thani of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1404/04/17 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 20 January 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Rabi Al Thani 1404 AH to its equivalent Gregorian date.
لَّا يَسْتَوِى ٱلْقَٰعِدُونَ مِنَ ٱلْمُؤْمِنِينَ غَيْرُ أُو۟لِى ٱلضَّرَرِ وَٱلْمُجَٰهِدُونَ فِى سَبِيلِ ٱللَّهِ بِأَمْوَٰلِهِمْ وَأَنفُسِهِمْ ۚ فَضَّلَ ٱللَّهُ ٱلْمُجَٰهِدِينَ بِأَمْوَٰلِهِمْ وَأَنفُسِهِمْ عَلَى ٱلْقَٰعِدِينَ دَرَجَةًۭ ۚ وَكُلًّۭا وَعَدَ ٱللَّهُ ٱلْحُسْنَىٰ ۚ وَفَضَّلَ ٱللَّهُ ٱلْمُجَٰهِدِينَ عَلَى ٱلْقَٰعِدِينَ أَجْرًا عَظِيمًۭا
Those of the believers who sit still, other than those who have a (disabling) hurt, are not on an equality with those who strive in the way of Allah with their wealth and lives. Allah hath conferred on those who strive with their wealth and lives a rank above the sedentary. Unto each Allah hath promised good, but He hath bestowed on those who strive a great reward above the sedentary;
Surah An-Nisaa(4:95)