Well, the Hijri date 20 Rabi Al Thani 1377 corresponds to the Gregorian date Tuesday, 12 November 1957. This date lies in the fourth month of the Hijri year 1377 AH, which is Rabi Al-Thani of 1377 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1377/04/20 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 12 November 1957 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1377 AH to its equivalent Gregorian date.
وَأَسِرُّوا۟ قَوْلَكُمْ أَوِ ٱجْهَرُوا۟ بِهِۦٓ ۖ إِنَّهُۥ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
And keep your opinion secret or proclaim it, lo! He is Knower of all that is in the breasts (of men).
Surah Al-Mulk(67:13)
Sahih al-Bukhari
Merits of the Helpers in Madinah (Ansaar)
Chapter: The virtues of ‘Abdullah bin Salam رضي الله عنه
Narrated Sa`d bin Abi Waqqas:
I have never heard the Prophet (ﷺ) saying about anybody walking on the earth that he is from the people of Paradise except `Abdullah bin Salam. The following Verse was revealed concerning him: "And a witness from the children of Israel testifies that this Qur'an is true" (46.10)
Sahih al-Bukhari 3812