In Egypt Muharram marks the beginning of a new year according to their lunar based calendar. It celebrates the dawning of a fresh start and new beginning.
Celebration\ Observance
Celebrations depend on belief to where some Muslims make a pilgrimage or fast or just continue to go to the mosque every morning. Either way it is a time for reflection and plans for a new year.
History
Muharram is a very sacred months to where Muslims are not supposed to fight for the entire months. This holiday marks the beginning of the month and the period of peace.