Well, the Hijri date 17 Safar 1337 corresponds to the Gregorian date Wednesday, 20 November 1918. This date lies in the second month of the Hijri year 1337 AH, which is Safar of 1337 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1337/02/17 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 20 November 1918 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Safar 1337 AH to its equivalent Gregorian date.
فَإِنْ ءَامَنُوا۟ بِمِثْلِ مَآ ءَامَنتُم بِهِۦ فَقَدِ ٱهْتَدَوا۟ ۖ وَّإِن تَوَلَّوْا۟ فَإِنَّمَا هُمْ فِى شِقَاقٍۢ ۖ فَسَيَكْفِيكَهُمُ ٱللَّهُ ۚ وَهُوَ ٱلسَّمِيعُ ٱلْعَلِيمُ
And if they believe in the like of that which ye believe, then are they rightly guided. But if they turn away, then are they in schism, and Allah will suffice thee (for defence) against them. He is the Hearer, the Knower.
Surah Al-Baqara(2:137)