Well, the Hijri date 11 Rabi Al Awwal 1404 corresponds to the Gregorian date Thursday, 15 December 1983. This date lies in the third month of the Hijri year 1404 AH, which is Rabi Al-Awwal of 1404 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1404/03/11 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 15 December 1983 to its equivalent Arabic date.
The following is the conversion of the Arabic date 11 Rabi Al Awwal 1404 AH to its equivalent Gregorian date.
وَكَذَٰلِكَ أَنزَلْنَٰهُ ءَايَٰتٍۭ بَيِّنَٰتٍۢ وَأَنَّ ٱللَّهَ يَهْدِى مَن يُرِيدُ
Thus We reveal it as plain revelations, and verily Allah guideth whom He will.
Surah Al-Hajj(22:16)
Sahih al-Bukhari
Prophets
Chapter: What has been said about Bani Israel
Narrated `Aisha and Ibn `Abbas:
On his death-bed Allah's Messenger (ﷺ) put a sheet over his-face and when he felt hot, he would remove it from his face. When in that state (of putting and removing the sheet) he said, "May Allah's Curse be on the Jews and the Christians for they build places of worship at the graves of their prophets." (By that) he intended to warn (the Muslim) from what they (i.e. Jews and Christians) had done.
Sahih al-Bukhari 3453, 3454