At 11pm tonight we leave Europe after three years of will we, won't we.
And unsurprisingly Belfast folks have had quite a lot to say about it too.
We have trawled social media for the best local reaction to #BrexitDay.
The Irish Border has hung up its Twitter hat after amassing a huge 110,000 followers and writing its own book - as it now marks a UK border with the EU.
European Commission signage, however, is already being removed from its Belfast base.
The 'Good Friday Agreement' Twitter account simply says it is the 'worst Friday ever'.
Belfast campaigner Emma De Souza, who has been fighting the UK home office to be legally viewed as Irish, has also met it with a heavy heart.
Derry Girl Nicola Coughlan isn't all that chuffed about it either.
The Alliance Party says the focus now needs to be on protecting NI.
But a number of protests are planned at the border between NI and the Republic.
Paddy Raff got in early with his message before the 'networks go down'.
The Hole in The Wall Belfast said it won't be hosting Nigel or Boris but added that folks are still welcome for a pint.
Friends of the Earth are worried about the Environmental impact of the move.
And Unionist group Centenary NI don't appear to be all that happy about Brexit and the thought of an Irish Sea border either.
Brian B is fuming and predicts chaos by Christmas.
Michel Barnier has captured the mood perfectly with an apt response.
Is anyone, (except Boris) actually looking forward to Brexit in its entirety - whatever that means?
