Well, the Hijri date 21 Dhul Hijjah 1491 corresponds to the Gregorian date Wednesday, 13 February 2069. This date lies in the twelfth month of the Hijri year 1491 AH, which is Dhu Al-Hijjah of 1491 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1491/12/21 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 13 February 2069 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Dhul Hijjah 1491 AH to its equivalent Gregorian date.
وَلَآ أُقْسِمُ بِٱلنَّفْسِ ٱللَّوَّامَةِ
Nay, I swear by the accusing soul (that this Scripture is true).
Surah Al-Qiyaama(75:2)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
"But man is ever more quarrelsome than anything." (V.18:54)
Narrated `Ali:
That one night Allah's Messenger (ﷺ) came to him and Fatima and said, "Don't you (both offer the (Tahajjud) prayer?" `Ali said, 'When Allah wishes us to get up, we get up." The Prophet (ﷺ) then recited: 'But man is more quarrelsome than anything.' (18.54) (See Hadith No. 227,Vol. 2)
Sahih al-Bukhari 4724