Well, the Hijri date 8 Rabi Al Thani 1222 corresponds to the Gregorian date Sunday, 14 June 1807. This date lies in the fourth month of the Hijri year 1222 AH, which is Rabi Al-Thani of 1222 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1222/04/08 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 14 June 1807 to its equivalent Arabic date.
The following is the conversion of the Arabic date 8 Rabi Al Thani 1222 AH to its equivalent Gregorian date.
أَمَّنْ خَلَقَ ٱلسَّمَٰوَٰتِ وَٱلْأَرْضَ وَأَنزَلَ لَكُم مِّنَ ٱلسَّمَآءِ مَآءًۭ فَأَنۢبَتْنَا بِهِۦ حَدَآئِقَ ذَاتَ بَهْجَةٍۢ مَّا كَانَ لَكُمْ أَن تُنۢبِتُوا۟ شَجَرَهَآ ۗ أَءِلَٰهٌۭ مَّعَ ٱللَّهِ ۚ بَلْ هُمْ قَوْمٌۭ يَعْدِلُونَ
Is not He (best) Who created the heavens and the earth, and sendeth down for you water from the sky wherewith We cause to spring forth joyous orchards, whose trees it never hath been yours to cause to grow. Is there any Allah beside Allah? Nay, but they are folk who ascribe equals (unto Him)!
Surah An-Naml(27:60)