Well, the Hijri date 21 Dhul Hijjah 1306 corresponds to the Gregorian date Sunday, 18 August 1889. This date lies in the twelfth month of the Hijri year 1306 AH, which is Dhu Al-Hijjah of 1306 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1306/12/21 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 18 August 1889 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Dhul Hijjah 1306 AH to its equivalent Gregorian date.
لَّهُۥ مُلْكُ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ ۚ وَإِلَى ٱللَّهِ تُرْجَعُ ٱلْأُمُورُ
His is the Sovereignty of the heavens and the earth, and unto Allah (all) things are brought back.
Surah Al-Hadid(57:5)