https://www.bbc.com/news/uk-politics-47482047

On Tuesday MPs will pass their verdict on Prime Minister Theresa May's plan to take Britain out of the European Union on 29 March. Here is what you need to know about the vote.
When will the vote be held?
On Tuesday evening, after a full day of debate. We won't know the exact time until the government announces it.
What are MPs voting on?
They are passing judgement on the deal Theresa May spent two years negotiating with the European Union.

I think I'm gonna be sad
I think it's today
The Prime Minister who's driving me mad
Is going away (and taking us all with her!)
She's got a ticket to ride
We've got a ticket to ride
We've got a ticket to ride
But she don't care...

She said that living with EU
Was bringing us down.
We would never be free
When Tusk was around...

Don't know why she's riding so high,
She ought to think twice, ought to do right by me.
Before she gets to saying goodbye,
She ought to think twice, ought to do right by me...