The Calendar view provides a visual overview of all your campaigns, including delivered, active, and scheduled mailings.
Clicking View as Calendar gives you a different layout that helps you see the current day and when campaigns are scheduled throughout the month. This view is useful for understanding how often campaigns are delivered and maintaining a consistent pattern for your mailstream.
The left and right arrow icons on the upper right hand corner allow you to get backwards and forwards between months. You can also use the Schedule New option to schedule a new Mailing from the same page.