Well, the Hijri date 20 Muharram 1380 corresponds to the Gregorian date Thursday, 14 July 1960. This date lies in the first month of the Hijri year 1380 AH, which is Muharram of 1380 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1380/01/20 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 14 July 1960 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Muharram 1380 AH to its equivalent Gregorian date.
بِسْمِ ٱللَّهِ ٱلرَّحْمَٰنِ ٱلرَّحِيمِ لَمْ يَكُنِ ٱلَّذِينَ كَفَرُوا۟ مِنْ أَهْلِ ٱلْكِتَٰبِ وَٱلْمُشْرِكِينَ مُنفَكِّينَ حَتَّىٰ تَأْتِيَهُمُ ٱلْبَيِّنَةُ
Those who disbelieve among the People of the Scripture and the idolaters could not have left off (erring) till the clear proof came unto them,
Surah Al-Bayyina(98:1)
Sahih al-Bukhari
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Allah's Statement: "Allah will not punish you for what is unintentional in your oaths..." (V.5:89)
Narrated Aisha:
That her father (Abu Bakr) never broke his oath till Allah revealed the order of the legal expiation for oath. Abu Bakr said, "If I ever take an oath (to do something) and later find that to do something else is better, then I accept Allah's permission and do that which is better, (and do the legal expiation for my oath ) ".
Sahih al-Bukhari 4614