Well, the Hijri date 12 Shaban 1373 corresponds to the Gregorian date Thursday, 15 April 1954. This date lies in the eighth month of the Hijri year 1373 AH, which is Shaban of 1373 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1373/08/12 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 15 April 1954 to its equivalent Arabic date.
The following is the conversion of the Arabic date 12 Shaban 1373 AH to its equivalent Gregorian date.
وَإِذْ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ لَتُبَيِّنُنَّهُۥ لِلنَّاسِ وَلَا تَكْتُمُونَهُۥ فَنَبَذُوهُ وَرَآءَ ظُهُورِهِمْ وَٱشْتَرَوْا۟ بِهِۦ ثَمَنًۭا قَلِيلًۭا ۖ فَبِئْسَ مَا يَشْتَرُونَ
And (remember) when Allah laid a charge on those who had received the Scripture (He said): Ye are to expound it to mankind and not to hide it. But they flung it behind their backs and bought thereby a little gain. Verily evil is that which they have gained thereby.
Surah Aal-i-Imraan(3:187)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: If Al-Mushrikun take the property of a Muslim as war booty
Narrated Ibn `Umar:
That he was riding a horse on the day, the Muslims fought (against the Byzantines), and the commander of the Muslim army was Khalid bin Al-Walid who had been appointed by Abu Bakr. The enemy took the horse away, and when the enemy was defeated, Khalid returned the horse to him.
Sahih al-Bukhari 3069