We received the following alert from Blackboard:
Blackboard Collaborate will be performing scheduled maintenance on Saturday, April 21st, 2018
Begin Time: Saturday, April 21st, 2018 04:00am US Eastern (UTC/GMT-4)
End Time: Saturday, April 21st, 2018 06:00am US Eastern (UTC/GMT-4)
Details: While we anticipate no interruption in service as a result of the work being performed, we cannot entirely rule out periods of service interruptions during these maintenance windows. We will make all efforts to keep any service disruption within the window to a minimum, but Collaborate clients should be aware that interruptions are possible.