Well, the Hijri date 18 Muharram 1513 corresponds to the Gregorian date Monday, 25 July 2089. This date lies in the first month of the Hijri year 1513 AH, which is Muharram of 1513 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1513/01/18 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 25 July 2089 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Muharram 1513 AH to its equivalent Gregorian date.
۞ هُوَ ٱلَّذِى خَلَقَكُم مِّن نَّفْسٍۢ وَٰحِدَةٍۢ وَجَعَلَ مِنْهَا زَوْجَهَا لِيَسْكُنَ إِلَيْهَا ۖ فَلَمَّا تَغَشَّىٰهَا حَمَلَتْ حَمْلًا خَفِيفًۭا فَمَرَّتْ بِهِۦ ۖ فَلَمَّآ أَثْقَلَت دَّعَوَا ٱللَّهَ رَبَّهُمَا لَئِنْ ءَاتَيْتَنَا صَٰلِحًۭا لَّنَكُونَنَّ مِنَ ٱلشَّٰكِرِينَ
He it is Who did create you from a single soul, and therefrom did make his mate that he might take rest in her. And when he covered her she bore a light burden, and she passed (unnoticed) with it, but when it became heavy they cried unto Allah, their Lord, saying: If thou givest unto us aright we shall be of the thankful.
Surah Al-A'raaf(7:189)