Well, the Hijri date 27 Shawwal 1139 corresponds to the Gregorian date Monday, 16 June 1727. This date lies in the tenth month of the Hijri year 1139 AH, which is Shawwal of 1139 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1139/10/27 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 16 June 1727 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Shawwal 1139 AH to its equivalent Gregorian date.
أَوَعَجِبْتُمْ أَن جَآءَكُمْ ذِكْرٌۭ مِّن رَّبِّكُمْ عَلَىٰ رَجُلٍۢ مِّنكُمْ لِيُنذِرَكُمْ وَلِتَتَّقُوا۟ وَلَعَلَّكُمْ تُرْحَمُونَ
Marvel ye that there should come unto you a Reminder from your Lord by means of a man among you, that he may warn you, and that ye may keep from evil, and that haply ye may find mercy.
Surah Al-A'raaf(7:63)