Well, the Hijri date 1 Dhul Hijjah 1511 corresponds to the Gregorian date Sunday, 20 June 2088. This date lies in the twelfth month of the Hijri year 1511 AH, which is Dhu Al-Hijjah of 1511 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1511/12/01 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 20 June 2088 to its equivalent Arabic date.
The following is the conversion of the Arabic date 1 Dhul Hijjah 1511 AH to its equivalent Gregorian date.
وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لَا تَأْتِينَا ٱلسَّاعَةُ ۖ قُلْ بَلَىٰ وَرَبِّى لَتَأْتِيَنَّكُمْ عَٰلِمِ ٱلْغَيْبِ ۖ لَا يَعْزُبُ عَنْهُ مِثْقَالُ ذَرَّةٍۢ فِى ٱلسَّمَٰوَٰتِ وَلَا فِى ٱلْأَرْضِ وَلَآ أَصْغَرُ مِن ذَٰلِكَ وَلَآ أَكْبَرُ إِلَّا فِى كِتَٰبٍۢ مُّبِينٍۢ
Those who disbelieve say: The Hour will never come unto us. Say: Nay, by my Lord, but it is coming unto you surely. (He is) the Knower of the Unseen. Not an atom's weight, or less than that or greater, escapeth Him in the heavens or in the earth, but it is in a clear Record,
Surah Saba(34:3)