وَإِذَا قَرَأْتَ الْقُرْآنَ جَعَلْنَا بَيْنَكَ وَبَيْنَ الَّذِينَ لَا يُؤْمِنُونَ بِالْآخِرَةِ حِجَابًا مَّسْتُورًا 
By His wisdom, God gave preference to some places and times over others. For Muslims, Friday is the best day of the week, Ramadan is the best month of the year, “Laylat al-Qadr” is the best night in Ramadan, the day of “Arafah” is the best day of the year. Likewise the first ten days of the month of “Dhul-Hijjah” are the blessed days for Muslims.