Well, the Hijri date 18 Muharram 1433 corresponds to the Gregorian date Tuesday, 13 December 2011. This date lies in the first month of the Hijri year 1433 AH, which is Muharram of 1433 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1433/01/18 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 13 December 2011 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Muharram 1433 AH to its equivalent Gregorian date.
قُلْ يَٰٓأَهْلَ ٱلْكِتَٰبِ هَلْ تَنقِمُونَ مِنَّآ إِلَّآ أَنْ ءَامَنَّا بِٱللَّهِ وَمَآ أُنزِلَ إِلَيْنَا وَمَآ أُنزِلَ مِن قَبْلُ وَأَنَّ أَكْثَرَكُمْ فَٰسِقُونَ
Say: O People of the Scripture! Do ye blame us for aught else than that we believe in Allah and that which is revealed unto us and that which was revealed aforetime, and because most of you are evil-livers?
Surah Al-Maaida(5:59)