Most offices on Joint Base Myer-Henderson Hall will be closed on December 25th and January 1st for the federal holidays. Many facilities will also have reduced hours or be closed on December 24th, 31st, and surrounding days. The document then provides a list of specific facilities and their holiday hours, such as the Main Exchange being closed on the 25th and 1st but open from 9am to 5pm on the 24th and 31st, and the fitness centers being closed or having reduced hours during the holiday period.