This article covers the calendar tool in the Monitoring interface.
You can select the preferred calendar dates you wish to view the monitoring interface. The calendar view has multiple pre-selected view options, and you may also use the Custom Range to select the exact dates you wish to inspect.
If you have multiple timezones set up for your devices, you may press the button where in the reference picture it says “Europe/Helsinki”, to switch between timezones.
Pressing the arrows next to the calendar selection lets you move back and forward in the calendar view. The amount that is moved depends on the selected time frame. For example, if you selected “Last 7 days”, the arrow will move to that direction in time for seven days per click.