Well, the Hijri date 18 Rabi Al Thani 1473 corresponds to the Gregorian date Sunday, 1 January 2051. This date lies in the fourth month of the Hijri year 1473 AH, which is Rabi Al-Thani of 1473 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1473/04/18 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 1 January 2051 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Thani 1473 AH to its equivalent Gregorian date.
لَا يَزَالُ بُنْيَٰنُهُمُ ٱلَّذِى بَنَوْا۟ رِيبَةًۭ فِى قُلُوبِهِمْ إِلَّآ أَن تَقَطَّعَ قُلُوبُهُمْ ۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ
The building which they built will never cease to be a misgiving in their hearts unless their hearts be torn to pieces. Allah is Knower, Wise.
Surah At-Tawba(9:110)
Sahih al-Bukhari
Apostates
Chapter: Whoever gave up fighting against Al-Khawarij in order to create intimacy
Narrated Yusair bin `Amr:
I asked Sahl bin Hunaif, "Did you hear the Prophet (ﷺ) saying anything about Al-Khawarij?" He said, "I heard him saying while pointing his hand towards Iraq. "There will appear in it (i.e, Iraq) some people who will recite the Qur'an but it will not go beyond their throats, and they will go out from (leave) Islam as an arrow darts through the game's body.' "
Sahih al-Bukhari 6934