Not a chess puzzle

 Can you work out what day of the week Abby was born on, based on the following conversations?

Abby and Barry know the day of the week they were born on, but not the day of the week the other was. Both know that Barry was not born on a Monday, and they are told (by someone who knows both birthdays) that they were born on consecutive days of the week (eg Tue, Wed), although not necessarily in a specific order. 

They are then asked alternately whether they know the day of the week the other was born on, starting with Abby. "No", "No", "No" "No", "No", "Yes!" (3 No's by Abbey, 2 No's and a final Yes by Barry). What day of the week was Abby born?

If you can't find a solution, or the question was simply worded badly, then you can see the answer below.