When: Between Thursday, July 5th at 11 PM through Friday, July 6th at 6 AM.
What: Blackboard will be undergoing scheduled maintenance and will experience some downtime within the specified time parameters. The downtime may be sporadic rather than one long event.
Planning around it: Be sure that you submit any course work in Bb prior to or after the scheduled maintenance. If you have a due date within that time frame, make sure you've made your submissions in advance.