The week of ceremonies began with President Éamon de Valera taking a salute from units of the Defence Forces at the General Post Office in O'Connell Street.

Both radio and television gave wide coverage of the week of ceremonies commemorating the 50th anniversary of the Easter Rising.

The week of ceremonies began with a reading of the Proclamation of the Republic at the General Post Office, Dublin, followed by a military parade. In the presence of a distinguished gathering, including many survivors of the Rising, President, Éamon de Valera, took a salute as units of the Defence Forces converged on O'Connell Street from points associated with the different garrisons of Easter Week and marched past the GPO.

The opening ceremony was broadcast live on RTÉ radio and television as part of 'Cuimhneacháin 1916' on 10 April 1966.

In 1966 Telefís Éireann, was broadcasting in black and white. Television producer Michael Johnston came up with the idea of using colour film to document the Easter Week events in Dublin and around the country.  As a result colour footage of the ceremonies in O’Connell Street is available to view on RTÉ Archives.