Well, the Hijri date 1 Shaban 1337 corresponds to the Gregorian date Thursday, 1 May 1919. This date lies in the eighth month of the Hijri year 1337 AH, which is Shaban of 1337 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1337/08/01 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 1 May 1919 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Shaban 1337 AH to its equivalent Gregorian date.
قَالُوٓا۟ أَجِئْتَنَا لِنَعْبُدَ ٱللَّهَ وَحْدَهُۥ وَنَذَرَ مَا كَانَ يَعْبُدُ ءَابَآؤُنَا ۖ فَأْتِنَا بِمَا تَعِدُنَآ إِن كُنتَ مِنَ ٱلصَّٰدِقِينَ
They said: Hast come unto us that we should serve Allah alone, and forsake what our fathers worshipped? Then bring upon us that wherewith thou threatenest us if thou art of the truthful!
Surah Al-A'raaf(7:70)