Well, the Hijri date 21 Jumada Al Oula 1480 corresponds to the Gregorian date Sunday, 18 November 2057. This date lies in the fifth month of the Hijri year 1480 AH, which is Jumada Al-Awwal of 1480 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1480/05/21 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 18 November 2057 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Jumada Al Oula 1480 AH to its equivalent Gregorian date.
وَقَالَ ٱلَّذِينَ أُوتُوا۟ ٱلْعِلْمَ وَٱلْإِيمَٰنَ لَقَدْ لَبِثْتُمْ فِى كِتَٰبِ ٱللَّهِ إِلَىٰ يَوْمِ ٱلْبَعْثِ ۖ فَهَٰذَا يَوْمُ ٱلْبَعْثِ وَلَٰكِنَّكُمْ كُنتُمْ لَا تَعْلَمُونَ
But those to whom knowledge and faith are given will say: The truth is, ye have tarried, by Allah's decree, until the Day of Resurrection. This is the Day of Resurrection, but ye used not to know.
Surah Ar-Room(30:56)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
The Statement of Allah ta'ala: "And [He has sent him (Prophet Muḥammad pbuh) also to] others among them (Muslims) who have not yet joined them..." (V.62:3)
Narrated Abu Huraira:
While we were sitting with the Prophet (ﷺ) Surat Al-Jumu'a was revealed to him, and when the Verse, "And He (Allah) has sent him (Muhammad) also to other (Muslims).....' (62.3) was recited by the Prophet, I said, "Who are they, O Allah's Messenger (ﷺ)?" The Prophet (ﷺ) did not reply till I repeated my question thrice. At that time, Salman Al-Farisi was with us. So Allah's Messenger (ﷺ) put his hand on Salman, saying, "If Faith were at (the place of) Ath-Thuraiya (pleiades, the highest star), even then (some men or man from these people (i.e. Salman's folk) would attain it."
Sahih al-Bukhari 4897