Well, the Hijri date 19 Ramadan 1404 corresponds to the Gregorian date Monday, 18 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 Monday without any doubt. The Arabic date 1404/09/19 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 18 June 1984 to its equivalent Arabic date.
The following is the conversion of the Arabic date 19 Ramadan 1404 AH to its equivalent Gregorian date.
قَٰتِلُوا۟ ٱلَّذِينَ لَا يُؤْمِنُونَ بِٱللَّهِ وَلَا بِٱلْيَوْمِ ٱلْءَاخِرِ وَلَا يُحَرِّمُونَ مَا حَرَّمَ ٱللَّهُ وَرَسُولُهُۥ وَلَا يَدِينُونَ دِينَ ٱلْحَقِّ مِنَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ حَتَّىٰ يُعْطُوا۟ ٱلْجِزْيَةَ عَن يَدٍۢ وَهُمْ صَٰغِرُونَ
Fight against such of those who have been given the Scripture as believe not in Allah nor the Last Day, and forbid not that which Allah hath forbidden by His messenger, and follow not the Religion of Truth, until they pay the tribute readily, being brought low.
Surah At-Tawba(9:29)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: Hajjat-ul-Wada
Narrated Hafsa:
(the wife of the Prophet) The Prophet (ﷺ) ordered all his wives to finish their Ihram during the year of Hajjat-ul-Wada`. On that, I asked the Prophet (ﷺ) "What stops you from finishing your lhram?" He said, "I have matted my hair and garlanded my Hadi. So I will not finish my Ihram unless I have slaughtered my Hadi."
Sahih al-Bukhari 4398