Well, the Hijri date 6 Rabi Al Awwal 1421 corresponds to the Gregorian date Thursday, 8 June 2000. This date lies in the third month of the Hijri year 1421 AH, which is Rabi Al-Awwal of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1421/03/06 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 8 June 2000 to its equivalent Arabic date.
The following is the conversion of the Arabic date 6 Rabi Al Awwal 1421 AH to its equivalent Gregorian date.
قَالُوا۟ ٱبْنُوا۟ لَهُۥ بُنْيَٰنًۭا فَأَلْقُوهُ فِى ٱلْجَحِيمِ
They said: Build for him a building and fling him in the red-hotfire.
Surah As-Saaffaat(37:97)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah the Most High: "That will be a Day when they shall not speak (during some part of it) ." (V.77:35)
Narrated `Abdullah:
While we were with the Prophet (ﷺ) in a cave, Surat wal-Mursalat was revealed to him and he recited it, and I heard it directly from his mouth as soon as he recited its revelation. Suddenly a snake sprang at us, and the Prophet (ﷺ) said, "Kill it!" We ran to kill it but it escaped quickly. The Prophet (ﷺ) said. "It has escaped your evil, and you too have escaped its evil."
Sahih al-Bukhari 4934