Sham Ennessim (Egyptian Arabic: شم النسيم‎, Sham El Nessim or Sham en-Nessim, IPA: [ˈʃæmm ennɪˈsiːm]) Coptic: Ϭⲱⲙ ̀ⲛⲛⲓⲥⲓⲙ, Shom Ennisim) is an Egyptian national holiday marking the beginning of spring. It always falls on the day after the Eastern Christian Easter (following the custom of the largest Christian denomination in the country, the Coptic Orthodox Church).