It depends on which Holiday you are talking about. Egypt celebrates these holidays:
Coptic Christmas
Police Day
Moulid El Nabi (The Prophet's Birthday)
Public Holiday (Constitutional Referendum)
Coptic Easter
Sinai Liberation Day
Sham el Nessim
Labour Day
Revolution Day (National Day)
Iftar Bayram (End of Ramadan)
End of Ramadan Holiday
Armed Forces Day
Wakfet Arafat
Al Adha (Feast of Sacrifice)
El Hijra (Islamic New Year)