Well, the Hijri date 21 Ramadan 1307 corresponds to the Gregorian date Saturday, 10 May 1890. This date lies in the ninth month of the Hijri year 1307 AH, which is Ramadan of 1307 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1307/09/21 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 10 May 1890 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Ramadan 1307 AH to its equivalent Gregorian date.
وَٱلْأَرْضَ مَدَدْنَٰهَا وَأَلْقَيْنَا فِيهَا رَوَٰسِىَ وَأَنۢبَتْنَا فِيهَا مِن كُلِّ شَىْءٍۢ مَّوْزُونٍۢ
And the earth have We spread out, and placed therein firm hills, and caused each seemly thing to grow therein.
Surah Al-Hijr(15:19)