Well, the Hijri date 18 Rabi Al Awwal 1377 corresponds to the Gregorian date Friday, 11 October 1957. This date lies in the third month of the Hijri year 1377 AH, which is Rabi Al-Awwal of 1377 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1377/03/18 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 11 October 1957 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rabi Al Awwal 1377 AH to its equivalent Gregorian date.
قُلْ مَا يَعْبَؤُا۟ بِكُمْ رَبِّى لَوْلَا دُعَآؤُكُمْ ۖ فَقَدْ كَذَّبْتُمْ فَسَوْفَ يَكُونُ لِزَامًۢا
Say (O Muhammad, unto the disbelievers): My Lord would not concern Himself with you but for your prayer. But now ye have denied (the Truth), therefor there will be judgment.
Surah Al-Furqaan(25:77)
Sahih al-Bukhari
Funerals (Al-Janaa'iz)
Chapter: To offer the (funeral) Salat on the grave after the burial of the deceased
Narrated Sulaiman Ash-Shaibani:
I heard Ash-Shu`bi saying, "I was told by a man who had passed with the Prophet (p.b.u.h) by a grave that was separate from the other graves that he (the Prophet (ﷺ) ) led them in the prayer and they prayed behind him." I said, "O Abu `Amr! Who narrated that to you?" He replied, "Ibn `Abbas."
Sahih al-Bukhari 1336