Philip lies a lot.
1) He tells the truth on only one of the days of the week.
2) The days of the week in order are: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Monday, etc.
3) One day he said:"I lie on Mondays and Tuesdays."
4) The next day he said:"Today is either Thursday, Saturday,or Sunday."
5) The next day he said:"I lie on Wednesdays and Fridays."
On which day of the week does Philip tell the truth?