Well, the Hijri date 21 Rabi Al Thani 1442 corresponds to the Gregorian date Sunday, 6 December 2020. This date lies in the fourth month of the Hijri year 1442 AH, which is Rabi Al-Thani of 1442 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1442/04/21 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 6 December 2020 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1442 AH to its equivalent Gregorian date.
بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ لَآ أُقْسِمُ بِيَوْمِ ٱلْقِيَٰمَةِ
Nay, I swear by the Day of Resurrection;
Surah Al-Qiyaama(75:1)
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