Well, the Hijri date 12 Rabi Al Awwal 1401 corresponds to the Gregorian date Sunday, 18 January 1981. This date lies in the third month of the Hijri year 1401 AH, which is Rabi Al-Awwal of 1401 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1401/03/12 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 18 January 1981 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Rabi Al Awwal 1401 AH to its equivalent Gregorian date.
فَبِمَا رَحْمَةٍۢ مِّنَ ٱللَّهِ لِنتَ لَهُمْ ۖ وَلَوْ كُنتَ فَظًّا غَلِيظَ ٱلْقَلْبِ لَٱنفَضُّوا۟ مِنْ حَوْلِكَ ۖ فَٱعْفُ عَنْهُمْ وَٱسْتَغْفِرْ لَهُمْ وَشَاوِرْهُمْ فِى ٱلْأَمْرِ ۖ فَإِذَا عَزَمْتَ فَتَوَكَّلْ عَلَى ٱللَّهِ ۚ إِنَّ ٱللَّهَ يُحِبُّ ٱلْمُتَوَكِّلِينَ
It was by the mercy of Allah that thou wast lenient with them (O Muhammad), for if thou hadst been stern and fierce of heart they would have dispersed from round about thee. So pardon them and ask forgiveness for them and consult with them upon the conduct of affairs. And when thou art resolved, then put thy trust in Allah. Lo! Allah loveth those who put their trust (in Him).
Surah Aal-i-Imraan(3:159)
Sahih al-Bukhari
Virtues and Merits of the Prophet (pbuh) and his Companions
Chapter: The miracle of the splitting of the moon
Narrated `Abdullah bin Masud:
During the lifetime of the Prophet (ﷺ) the moon was split into two parts and on that the Prophet (ﷺ) said, "Bear witness (to thus).
Sahih al-Bukhari 3636