Last Puzzles (Truth Lie Day Of Week Problem)

Jack and Rose speak lies on some particular days. While Jack speaks lies on Fridays, Saturdays and Sundays, Rose speaks lies on Tuesdays, Wednesdays and Thursdays. On all other respective days, they speak truth. If you know about this behavior, can you find out a day in the week when both of them will say "Tomorrow, I will lie."?

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