Well, the Hijri date 13 Shawwal 1421 corresponds to the Gregorian date Monday, 8 January 2001. This date lies in the tenth month of the Hijri year 1421 AH, which is Shawwal of 1421 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1421/10/13 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 January 2001 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Shawwal 1421 AH to its equivalent Gregorian date.
هُوَ ٱلَّذِىٓ أَنزَلَ مِنَ ٱلسَّمَآءِ مَآءًۭ ۖ لَّكُم مِّنْهُ شَرَابٌۭ وَمِنْهُ شَجَرٌۭ فِيهِ تُسِيمُونَ
He it is Who sendeth down water from the sky, whence ye have drink, and whence are trees on which ye send your beasts to pasture.
Surah An-Nahl(16:10)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: To give a Bai'a for not to flee during a battle
Narrated `Abdullah bin Zaid:
that in the time (of the battle) of Al-Harra a person came to him and said, "Ibn Hanzala is taking the pledge of allegiance from the people for death." He said, "I will never give a pledge of allegiance for such a thing to anyone after Allah's Messenger (ﷺ)."
Sahih al-Bukhari 2959