Britney tells truth only once a week. Below are a few hints for you:
First Hint: Days are Sunday, Monday and so on.
Second Hint: One day she says that she lies on Monday and Tuesday.
Third Hint: On the next day she says, 'Today is either Thursday, Saturday or Sunday'.
Fourth Hint: On the next day, she says that she lies on Wednesday and Friday.
Can you find out on which day does Britney speaks truth ?