Well, the Hijri date 27 Ramadan 1404 corresponds to the Gregorian date Tuesday, 26 June 1984. This date lies in the ninth month of the Hijri year 1404 AH, which is Ramadan of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1404/09/27 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 26 June 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Ramadan 1404 AH to its equivalent Gregorian date.
وَٱذْكُرُوٓا۟ إِذْ جَعَلَكُمْ خُلَفَآءَ مِنۢ بَعْدِ عَادٍۢ وَبَوَّأَكُمْ فِى ٱلْأَرْضِ تَتَّخِذُونَ مِن سُهُولِهَا قُصُورًۭا وَتَنْحِتُونَ ٱلْجِبَالَ بُيُوتًۭا ۖ فَٱذْكُرُوٓا۟ ءَالَآءَ ٱللَّهِ وَلَا تَعْثَوْا۟ فِى ٱلْأَرْضِ مُفْسِدِينَ
And remember how He made you viceroys after A'ad and gave you station in the earth. Ye choose castles in the plains and hew the mountains into dwellings. So remember (all) the bounties of Allah and do not evil, making mischief in the earth.
Surah Al-A'raaf(7:74)