This year I failed to note Coptic New Year (Neyrouz) on September 11, though I have done so in previous years, so belatedly I'll refer you to this story: "Egypt's Ministry of Antiquities celebrates New Coptic Year."
The year just begun is AM (Year of the Martyrs) 1731. The calendar is Julian and dates from the persecution of Diocletian in AD 284.
It's also the New Year for Ethiopians and Eritreans, though the years are computed differently. Ahram Online added this graphic of the Ancient Egyptian calendar, from which the Coptic derives: