Well, the Hijri date 18 Muharram 1427 corresponds to the Gregorian date Friday, 17 February 2006. This date lies in the first month of the Hijri year 1427 AH, which is Muharram of 1427 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1427/01/18 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 17 February 2006 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Muharram 1427 AH to its equivalent Gregorian date.
وَمَا لَكُمْ لَا تُؤْمِنُونَ بِٱللَّهِ ۙ وَٱلرَّسُولُ يَدْعُوكُمْ لِتُؤْمِنُوا۟ بِرَبِّكُمْ وَقَدْ أَخَذَ مِيثَٰقَكُمْ إِن كُنتُم مُّؤْمِنِينَ
What aileth you that ye believe not in Allah, when the messenger calleth you to believe in your Lord, and He hath already made a covenant with you, if ye are believers?
Surah Al-Hadid(57:8)