Well, the Hijri date 18 Rajab 1431 corresponds to the Gregorian date Wednesday, 30 June 2010. This date lies in the seventh month of the Hijri year 1431 AH, which is Rajab of 1431 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1431/07/18 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 30 June 2010 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Rajab 1431 AH to its equivalent Gregorian date.
وَإِذْ أَخَذْنَا مِيثَٰقَكُمْ وَرَفَعْنَا فَوْقَكُمُ ٱلطُّورَ خُذُوا۟ مَآ ءَاتَيْنَٰكُم بِقُوَّةٍۢ وَٱذْكُرُوا۟ مَا فِيهِ لَعَلَّكُمْ تَتَّقُونَ
And (remember, O Children of Israel) when We made a covenant with you and caused the mount to tower above you, (saying): Hold fast that which We have given you, and remember that which is therein, that ye may ward off (evil).
Surah Al-Baqara(2:63)