Alice came across a lion and a unicorn | with ANSWER

Alice came across a lion and a unicorn in a forest of forgetfulness.
The lion lies every Monday, Tuesday and Wednesday
and the other days he speaks the truth.
The unicorn lies on Thursdays, Fridays and Saturdays,
and the other days of the week he speaks the truth.
Lion : Yesterday I was lying.
Unicorn : So was I.
Which day did they say that ?

ANSWER:

THURSDAY

On Thursday lion will say the truth about him lying on Wednesday and
Unicorn will lie about it lying on Wednesday.