Downtime can be scheduled months and years in advance; therefore, the ability to view scheduled downtime is very important.
To view downtime within Opsview Monitor, be it scheduled, active, or historical, you should navigate to 'Scheduled Downtimes' within the 'Monitoring' tab of the overlay menu, as shown below:
Once displayed, you will be able to view all scheduled downtime (Active/Scheduled) as shown below:
Once the downtime period has passed, it will be considered 'historical'. To view all historical downtime, simply click on the 'Show Historical' button, which will display a window similar to below:
Historical Downtime can only be used for reporting; it cannot be cancelled or deleted.