The calendar allows you to view the diary on different days. There are several ways to use it:
Click 'Today' to view the diary events of today's date.
Use the arrows either side of 'Today' to quickly move the diary one day ahead or one day behind.
You can navigate through the calendar by using the arrows along the top, then clicking on the date you wish to view.
Click the date at the top to change the navigation. i.e clicking on the month will change the navigation to monthly, clicking on the year will change the navigation to yearly.