Hello, when will the library in Zhangjiakou open in 2022? In 2022, Zhangjiakou Library will open from 8: 30 am to 65438+02: 00 pm from Tuesday to Sunday, and will be closed on Monday. According to the official news released by Zhangjiakou Library, Zhangjiakou Library is a municipal comprehensive public library organized by the government and an important part of the city's education, science and culture. Opening hours are: every Tuesday to Sunday from 8: 30am to 8: 00pm12: 00pm,14: 30pm-18: 00pm (.