Well, the Hijri date 13 Rajab 1373 corresponds to the Gregorian date Thursday, 18 March 1954. This date lies in the seventh month of the Hijri year 1373 AH, which is Rajab of 1373 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1373/07/13 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 March 1954 to its equivalent Arabic date.
The following is the conversion of the Arabic date 13 Rajab 1373 AH to its equivalent Gregorian date.
وَمَنْ أَظْلَمُ مِمَّنِ ٱفْتَرَىٰ عَلَى ٱللَّهِ كَذِبًا أَوْ كَذَّبَ بِـَٔايَٰتِهِۦٓ ۗ إِنَّهُۥ لَا يُفْلِحُ ٱلظَّٰلِمُونَ
Who doth greater wrong than he who inventeth a lie against Allah or denieth His revelations? Lo! the wrongdoers will not be successful.
Surah Al-An'aam(6:21)