Brexit Day - 23:00 GMT Friday 29 March 2019

The EU Withdrawal Bill will be amended to formally commit to Brexit at 23:00 GMT on Friday 29 March 2019.

Theresa May is quoted by the BBC:

"Let no-one doubt our determination or question our resolve, Brexit is happening.

It will be there in black and white on the front page of this historic piece of legislation: the United Kingdom will be leaving the EU on March 29, 2019 at 11pm GMT."

The irony being that the 11PM deadline (as opposed to midnight UK time) is for the benefit of the EU (11PM GMT being midnight European time).