Well, the Hijri date 18 Jumada Al Akhira 1404 corresponds to the Gregorian date Tuesday, 20 March 1984. This date lies in the sixth month of the Hijri year 1404 AH, which is Jumada Al-Thani of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1404/06/18 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 20 March 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Jumada Al Akhira 1404 AH to its equivalent Gregorian date.
وَمَا تَكُونُ فِى شَأْنٍۢ وَمَا تَتْلُوا۟ مِنْهُ مِن قُرْءَانٍۢ وَلَا تَعْمَلُونَ مِنْ عَمَلٍ إِلَّا كُنَّا عَلَيْكُمْ شُهُودًا إِذْ تُفِيضُونَ فِيهِ ۚ وَمَا يَعْزُبُ عَن رَّبِّكَ مِن مِّثْقَالِ ذَرَّةٍۢ فِى ٱلْأَرْضِ وَلَا فِى ٱلسَّمَآءِ وَلَآ أَصْغَرَ مِن ذَٰلِكَ وَلَآ أَكْبَرَ إِلَّا فِى كِتَٰبٍۢ مُّبِينٍ
And thou (Muhammad) art not occupied with any business and thou recitest not a Lecture from this (Scripture), and ye (mankind) perform no act, but We are Witness of you when ye are engaged therein. And not an atom's weight in the earth or in the sky escapeth your Lord, nor what is less than that or greater than that, but it is (written) in a clear Book.
Surah Yunus(10:61)