Michael D Higgins has left Áras an Uachtaráin for the final time as President of Ireland.
Now attention turns to tomorrow's inauguration of Catherine Connolly as the tenth Uachtarán na hÉireann and how the day will unfold.
Dublin Castle
Dublin Castle is where the presidential inauguration will take place, with tight security already in place around the entire complex.
President-elect Catherine Connolly will stay in Farmleigh tonight.
Tomorrow, like her predecessors before her, she will be driven with an escort to Dublin Castle and into the cobbled Upper Yard for her inauguration.
The ceremony takes place in the sumptuous St Patrick’s Hall, where every president has been inaugurated since 1938.
Ahead of her arrival, invited guests from around Ireland will be seated in the hall.
Among them will be the Taoiseach, Tanáiste, members of the Government and Opposition, as well as members of the judiciary and guests representing a cross section of Irish society.
When she arrives, Ms Connolly will be escorted in a procession into the room.
Signature and Seal of Office
Following some musical performances, interspersed with some prayers and reflections, the inauguration proper will get under way.
What happens is laid out clearly in Bunreacht na Éireann, the Irish Constitution, in Article 12.8.
"The President shall enter upon his office by taking and subscribing publicly, in the presence of members of both Houses of the Oireachtas, of Judges of the Supreme Court, of the Court of Appeal and of the High Court, and other public personages, the following declaration:
"In the presence of Almighty God I do solemnly and sincerely promise and declare that I will maintain the Constitution of Ireland and uphold its laws, that I will fulfil my duties faithfully and conscientiously in accordance with the Constitution and the law, and that I will dedicate my abilities to the service and welfare of the people of Ireland. May God direct and sustain me."
The declaration will be read by Ireland’s Chief Justice Donal O’ Donnell and repeated by Ms Connolly.
She will then sign the declaration and officially be declared President of Ireland.
As the Chief Justice hands her the Seal of Office in Dublin Castle, a 21-gun salute will be fired from a gun battery in Collins Barracks, two kilometres down the River Liffey.
Guard of Honour
Once inaugurated, President Connolly will will make a short address to the assembled guests.
She will then exit St Patricks Hall back into the Upper Courtyard, where she will be met with a guard of honour from Óglaigh na hÉireann.
It will consist of 83 personnel from the Army, Air Corps and Naval Service.
As she will then be the new Supreme Commander of the Defence Forces she will carry out an inspection of the Guard of Honour.
Around the same time, there will be a fly past of four PC9 Aircorps aircraft.
Áras an Uachtaráin
Once the formalities in Dublin Castle have concluded, President Connolly and her husband Brian McEnery, will then travel by car to Áras an Uachtaráin, her official residence for the duration of her presidency.
On this first official journey as Uachtarán na hÉireann, she will be accompanied by motorcyclists from the 2nd Cavalry Squadron.
Later in the evening, President Connolly will return to Dublin Castle for a State Reception in her honour.
