Well, the Hijri date 21 Ramadan 1458 corresponds to the Gregorian date Sunday, 9 November 2036. This date lies in the ninth month of the Hijri year 1458 AH, which is Ramadan of 1458 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1458/09/21 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 9 November 2036 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Ramadan 1458 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ كَفَرُوا۟ وَمَاتُوا۟ وَهُمْ كُفَّارٌۭ فَلَن يُقْبَلَ مِنْ أَحَدِهِم مِّلْءُ ٱلْأَرْضِ ذَهَبًۭا وَلَوِ ٱفْتَدَىٰ بِهِۦٓ ۗ أُو۟لَٰٓئِكَ لَهُمْ عَذَابٌ أَلِيمٌۭ وَمَا لَهُم مِّن نَّٰصِرِينَ
Lo! those who disbelieve, and die in disbelief, the (whole) earth full of gold would not be accepted from such an one if it were offered as a ransom (for his soul). Theirs will be a painful doom and they will have no helpers.
Surah Aal-i-Imraan(3:91)
Sahih al-Bukhari
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
Chapter: The story of Bani An-Nadir
Narrated Sa`id bin Jubair:
I mentioned to Ibn `Abbas Surat-Hashr. He said, "Call it Surat-an-Nadir."
Sahih al-Bukhari 4029