President Moon Jae-in will take a day off Friday, his spokesman said on Thursday. (Yonhap)Moon needs rest because he hasn't taken a single day off since his European trip last month and he's scheduled to go on another overseas trip, spokesman Kim Eui-kyeom said.It will be Moon's 11th day off this year, including his five-day summer vacation.He has encouraged officials to use up their vacation days. (Yonhap)