Well, the Hijri date 14 Muharram 1377 corresponds to the Gregorian date Saturday, 10 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 1377/01/14 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 August 1957 to its equivalent Arabic date.
The following is the conversion of the Arabic date 14 Muharram 1377 AH to its equivalent Gregorian date.
وَإِن كَانَ طَآئِفَةٌۭ مِّنكُمْ ءَامَنُوا۟ بِٱلَّذِىٓ أُرْسِلْتُ بِهِۦ وَطَآئِفَةٌۭ لَّمْ يُؤْمِنُوا۟ فَٱصْبِرُوا۟ حَتَّىٰ يَحْكُمَ ٱللَّهُ بَيْنَنَا ۚ وَهُوَ خَيْرُ ٱلْحَٰكِمِينَ
And if there is a party of you which believeth in that wherewith I have been sent, and there is a party which believeth not, then have patience until Allah judge between us. He is the Best of all who deal in judgment.
Surah Al-A'raaf(7:87)
Sahih al-Bukhari
Funerals (Al-Janaa'iz)
Chapter: What is said about funerals, and those whose last words were: La ilãha ilallãh (none has the right to be worshipped but Allah)
Narrated `Abdullah:
Allah's Messenger (ﷺ) said, "Anyone who dies worshipping others along with Allah will definitely enter the Fire." I said, "Anyone who dies worshipping none along with Allah will definitely enter Paradise."
Sahih al-Bukhari 1238