Is it right to celebrate "sham el neseem"day, and if it is not right what is the reason?

The occasion of Sham al-neseem day is a national Egyptian habit and it does not include anything contradicting to the Shari'ah.

It is established in the Shari'ah that common social customs are permissible as log as they are compliant to the legal rulings. Claiming that this occasion originally contradicts the Shari'iah does not affect the matter, since it was forgotten by the passage of time. What really remain now are the forms of joy, going out and pleasing one family and the like as long as it does not contradict the Shari'ah. If these forms of celebration go beyond the limits of the Shari'ah and Islamic morals, it becomes then unlawful.