For your information:
OverDrive - Recurring Monthly Maintenance Window
In a continuous effort to provide our partners with a robust and secure server platform, OverDrive is establishing a monthly maintenance window to allow for systems maintenance should it be needed. This maintenance window will be scheduled for the third Thursday of every month, from 6:00 am - 8:00 am (Eastern Time).
All OverDrive sites, including Content Reserve and your OverDrive-hosted website, may be down for all or part of these regular maintenance windows. It is also possible that your website will not be affected during some maintenance windows. Please be assured that if your library site is affected, we will make every effort to display informative messaging to patrons that visit your site during any outage.
The first maintenance window is scheduled for Thursday, July 17 from 6:00 am - 8:00 am EDT.