Well, the Hijri date 23 Shaban 1421 corresponds to the Gregorian date Sunday, 19 November 2000. This date lies in the eighth month of the Hijri year 1421 AH, which is Shaban of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1421/08/23 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 19 November 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 23 Shaban 1421 AH to its equivalent Gregorian date.
وَلَٰكِنَّآ أَنشَأْنَا قُرُونًۭا فَتَطَاوَلَ عَلَيْهِمُ ٱلْعُمُرُ ۚ وَمَا كُنتَ ثَاوِيًۭا فِىٓ أَهْلِ مَدْيَنَ تَتْلُوا۟ عَلَيْهِمْ ءَايَٰتِنَا وَلَٰكِنَّا كُنَّا مُرْسِلِينَ
But We brought forth generations, and their lives dragged on for them. And thou wast not a dweller in Midian, reciting unto them Our revelations, but We kept sending (messengers to men).
Surah Al-Qasas(28:45)