Well, the Hijri date 5 Rabi Al Thani 1411 corresponds to the Gregorian date Tuesday, 23 October 1990. This date lies in the fourth month of the Hijri year 1411 AH, which is Rabi Al-Thani of 1411 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1411/04/05 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 23 October 1990 to its equivalent Arabic date.
The following is the conversion of the Arabic date 5 Rabi Al Thani 1411 AH to its equivalent Gregorian date.
أَوْ كَصَيِّبٍۢ مِّنَ ٱلسَّمَآءِ فِيهِ ظُلُمَٰتٌۭ وَرَعْدٌۭ وَبَرْقٌۭ يَجْعَلُونَ أَصَٰبِعَهُمْ فِىٓ ءَاذَانِهِم مِّنَ ٱلصَّوَٰعِقِ حَذَرَ ٱلْمَوْتِ ۚ وَٱللَّهُ مُحِيطٌۢ بِٱلْكَٰفِرِينَ
Or like a rainstorm from the sky, wherein is darkness, thunder and the flash of lightning. They thrust their fingers in their ears by reason of the thunder-claps, for fear of death, Allah encompasseth the disbelievers (in His guidance, His omniscience and His omnipotence).
Surah Al-Baqara(2:19)
Sahih al-Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions
Chapter: The Kunya of the Prophet (saws)
Narrated Anas:
While the Prophet (ﷺ) was in the market, a man called (somebody), "O Abu-l-Qasim!' The Prophet (ﷺ) turned to him and said "Name yourselves after me but do not call yourselves by my Kuniya."
Sahih al-Bukhari 3537