Well, the Hijri date 18 Ramadan 1139 corresponds to the Gregorian date Thursday, 8 May 1727. This date lies in the ninth month of the Hijri year 1139 AH, which is Ramadan of 1139 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1139/09/18 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 May 1727 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Ramadan 1139 AH to its equivalent Gregorian date.
وَتَحْمِلُ أَثْقَالَكُمْ إِلَىٰ بَلَدٍۢ لَّمْ تَكُونُوا۟ بَٰلِغِيهِ إِلَّا بِشِقِّ ٱلْأَنفُسِ ۚ إِنَّ رَبَّكُمْ لَرَءُوفٌۭ رَّحِيمٌۭ
And they bear your loads for you unto a land ye could not reach save with great trouble to yourselves. Lo! your Lord is Full of Pity, Merciful.
Surah An-Nahl(16:7)