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.
وَلِكُلٍّۢ جَعَلْنَا مَوَٰلِىَ مِمَّا تَرَكَ ٱلْوَٰلِدَانِ وَٱلْأَقْرَبُونَ ۚ وَٱلَّذِينَ عَقَدَتْ أَيْمَٰنُكُمْ فَـَٔاتُوهُمْ نَصِيبَهُمْ ۚ إِنَّ ٱللَّهَ كَانَ عَلَىٰ كُلِّ شَىْءٍۢ شَهِيدًا
And unto each We have appointed heirs of that which parents and near kindred leave; and as for those with whom your right hands have made a covenant, give them their due. Lo! Allah is ever Witness over all things.
Surah An-Nisaa(4:33)
Sahih al-Bukhari
Actions while Praying
Chapter: One should not return greetings during the Salat
Narrated Jabir bin `Abdullah:
Allah's Messenger (ﷺ) sent me for some job and when I had finished it I returned and came to the Prophet (ﷺ) and greeted him but he did not return my greeting. So I felt so sorry that only Allah knows it and I said to myself,, 'Perhaps Allah's Messenger (ﷺ) is angry because I did not come quickly, then again I greeted him but he did not reply. I felt even more sorry than I did the first time. Again I greeted him and he returned the greeting and said, "The thing which prevented me from returning the greeting was that I was praying." And at that time he was on his Rahila and his face was not towards the Qibla.
Sahih al-Bukhari 1217