Well, the Hijri date 21 Muharram 1377 corresponds to the Gregorian date Saturday, 17 August 1957. This date lies in the first month of the Hijri year 1377 AH, which is Muharram of 1377 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1377/01/21 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 17 August 1957 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Muharram 1377 AH to its equivalent Gregorian date.
رَبَّنَا وَٱبْعَثْ فِيهِمْ رَسُولًۭا مِّنْهُمْ يَتْلُوا۟ عَلَيْهِمْ ءَايَٰتِكَ وَيُعَلِّمُهُمُ ٱلْكِتَٰبَ وَٱلْحِكْمَةَ وَيُزَكِّيهِمْ ۚ إِنَّكَ أَنتَ ٱلْعَزِيزُ ٱلْحَكِيمُ
Our Lord! And raise up in their midst a messenger from among them who shall recite unto them Thy revelations, and shall instruct them in the Scripture and in wisdom and shall make them grow. Lo! Thou, only Thou, art the Mighty, Wise.
Surah Al-Baqara(2:129)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The emigration of the Prophet (saws) to Al-Madina
Narrated `Umar:
I heard the Prophet (ﷺ) saying, "The reward of deeds depends on the intentions, so whoever emigrated for the worldly benefits or to marry a woman, his emigration was for that for which he emigrated, but whoever emigrated for the Sake of Allah and His Apostle, his emigration is for Allah and His Apostle."
Sahih al-Bukhari 3898