Well, the Hijri date 21 Shawwal 1377 corresponds to the Gregorian date Saturday, 10 May 1958. This date lies in the tenth month of the Hijri year 1377 AH, which is Shawwal of 1377 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1377/10/21 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 10 May 1958 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Shawwal 1377 AH to its equivalent Gregorian date.
صِبْغَةَ ٱللَّهِ ۖ وَمَنْ أَحْسَنُ مِنَ ٱللَّهِ صِبْغَةًۭ ۖ وَنَحْنُ لَهُۥ عَٰبِدُونَ
(We take our) colour from Allah, and who is better than Allah at colouring. We are His worshippers.
Surah Al-Baqara(2:138)
Sahih al-Bukhari
Oneness, Uniqueness of Allah (Tawheed)
Chapter: What is allowed as regards the interpretation of the Taurat and other Holy Books
Narrated Abu Huraira:
The people of the Scripture used to read the Torah in Hebrew and explain it to the Muslims in Arabic. Then Allah's Messenger (ﷺ) said, "Do not believe the people of the Scripture, and do not disbelieve them, but say, 'We believe in Allah and whatever has been revealed...' (3.84)
Sahih al-Bukhari 7542