Well, the Hijri date 21 Ramadan 1431 corresponds to the Gregorian date Tuesday, 31 August 2010. This date lies in the ninth month of the Hijri year 1431 AH, which is Ramadan of 1431 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1431/09/21 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 31 August 2010 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Ramadan 1431 AH to its equivalent Gregorian date.
وَلَا تَنفَعُ ٱلشَّفَٰعَةُ عِندَهُۥٓ إِلَّا لِمَنْ أَذِنَ لَهُۥ ۚ حَتَّىٰٓ إِذَا فُزِّعَ عَن قُلُوبِهِمْ قَالُوا۟ مَاذَا قَالَ رَبُّكُمْ ۖ قَالُوا۟ ٱلْحَقَّ ۖ وَهُوَ ٱلْعَلِىُّ ٱلْكَبِيرُ
No intercession availeth with Him save for him whom He permitteth. Yet, when fear is banished from their hearts, they say: What was it that your Lord said? They say: The Truth. And He is the Sublime, the Great.
Surah Saba(34:23)