Well, the Hijri date 8 Ramadan 1380 corresponds to the Gregorian date Thursday, 23 February 1961. This date lies in the ninth month of the Hijri year 1380 AH, which is Ramadan of 1380 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1380/09/08 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 23 February 1961 to its equivalent Arabic date.
The following is the conversion of the Arabic date 8 Ramadan 1380 AH to its equivalent Gregorian date.
أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ ۚ وَلَوْ كَانَ مِنْ عِندِ غَيْرِ ٱللَّهِ لَوَجَدُوا۟ فِيهِ ٱخْتِلَٰفًۭا كَثِيرًۭا
Will they not then ponder on the Qur'an? If it had been from other than Allah they would have found therein much incongruity.
Surah An-Nisaa(4:82)
Sahih al-Bukhari
Forgetfulness in Prayer
Chapter: If one offers five Rak'a (instead of four)
Narrated' `Abdullah:
Once Allah's Messenger (ﷺ) offered five rak`at in the Zuhr prayer, and somebody asked him whether there was some increase in the prayer. Allah's Messenger (ﷺ) said, "What is that?" He said, "You have offered five rak`at." So Allah's Messenger (ﷺ) performed two prostrations of Sahu after Taslim.
Sahih al-Bukhari 1226