Well, the Hijri date 15 Ramadan 1373 corresponds to the Gregorian date Monday, 17 May 1954. This date lies in the ninth month of the Hijri year 1373 AH, which is Ramadan of 1373 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1373/09/15 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 17 May 1954 to its equivalent Arabic date.
The following is the conversion of the Arabic date 15 Ramadan 1373 AH to its equivalent Gregorian date.
ثُمَّ فِى سِلْسِلَةٍۢ ذَرْعُهَا سَبْعُونَ ذِرَاعًۭا فَٱسْلُكُوهُ
And then insert him in a chain whereof the length is seventy cubits.
Surah Al-Haaqqa(69:32)
Sahih al-Bukhari
Companions of the Prophet
Chapter: Narrations about Ibn 'Abbas رضي الله عنهما
Narrated Ibn `Abbas:
Once the Prophet (ﷺ) embraced me (pressed me to his chest) and said, "O Allah, teach him wisdom (i.e. the understanding of the knowledge of Qur'an).
Sahih al-Bukhari 3756