Well, the Hijri date 20 Dhul Hijjah 1136 corresponds to the Gregorian date Friday, 8 September 1724. This date lies in the twelfth month of the Hijri year 1136 AH, which is Dhu Al-Hijjah of 1136 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1136/12/20 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 8 September 1724 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Dhul Hijjah 1136 AH to its equivalent Gregorian date.
۞ مَّثَلُ ٱلْجَنَّةِ ٱلَّتِى وُعِدَ ٱلْمُتَّقُونَ ۖ تَجْرِى مِن تَحْتِهَا ٱلْأَنْهَٰرُ ۖ أُكُلُهَا دَآئِمٌۭ وَظِلُّهَا ۚ تِلْكَ عُقْبَى ٱلَّذِينَ ٱتَّقَوا۟ ۖ وَّعُقْبَى ٱلْكَٰفِرِينَ ٱلنَّارُ
A similitude of the Garden which is promised unto those who keep their duty (to Allah): Underneath it rivers flow; its food is everlasting, and its shade; this is the reward of those who keep their duty, while the reward of disbelievers is the Fire.
Surah Ar-Ra'd(13:35)