What are the operating hours of the Smithsonian Institute?

The operating hours of the Smithsonian Institute vary depending on the specific museum or facility. Most of the museums in Washington, D.C., including the National Air and Space Museum, National Museum of Natural History, and National Museum of American History, are open every day of the year except for December 25th. They typically welcome visitors from 10:00 am to 5:30 pm, with extended hours during the summer months. However, it is advisable to visit the Smithsonian's official website or contact the specific museum for the most accurate and up-to-date information regarding operating hours and any temporary closures or schedule changes. Additionally, some museums may have different operating hours or admission policies, so it is recommended to plan your visit accordingly.