Well, the Hijri date 21 Shawwal 1440 corresponds to the Gregorian date Monday, 24 June 2019. This date lies in the tenth month of the Hijri year 1440 AH, which is Shawwal of 1440 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1440/10/21 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 24 June 2019 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1440 AH to its equivalent Gregorian date.
ٱلَّذِينَ يَجْعَلُونَ مَعَ ٱللَّهِ إِلَٰهًا ءَاخَرَ ۚ فَسَوْفَ يَعْلَمُونَ
Who set some other god along with Allah. But they will come to know.
Surah Al-Hijr(15:96)
Sahih al-Bukhari
Companions of the Prophet
Chapter: "If I were to take Khalil ..."
'Aisha said (in another narration), ("When the Prophet (ﷺ) was on his death-bed) he looked up and said thrice, (Amongst) the Highest Companion (See Qur'an 4.69)' Aisha said, Allah benefited the people by their two speeches. 'Umar frightened the people some of whom were hypocrites whom Allah caused to abandon Islam because of 'Umar's speech. Then Abu Bakr led the people to True Guidance and acquainted them with the right path they were to follow so that they went out reciting:
-- "Muhammad is no more than an Apostle and indeed many Apostles have passed away before him.." (3.144)
Sahih al-Bukhari 3669, 3670