The 24-hour lab is open all the time, 24 hours a day, 365 days a year. There are no days that the lab is scheduled to be closed.
That said there are times when the lab needs to close for cleaning or maintenance. These closures will be clearly posted via signs in the space and posted on social media.
If you can not access the 24-hour space you can contact JMU’s Card Services (540-568-6446). Once you graduate from JMU alumni access slowly tapers away after graduation. It’s not an instant process, so alumni will lose access over the summer.