According to the Jinsha Museum’s official website, it is open on Mondays. The museum typically operates from 9:00 AM to 5:30 PM from March 1st to October 31st, and from 9:00 AM to 4:30 PM from November 1st to February 28th.
Please note that the opening hours may change during special events or festivals. I would recommend checking the museum’s official website or calling them directly to confirm their operating hours before planning your visit.