The calendar display is split into two parts, a graphic display and text display. These parts display much of the same information, both display the sunrise/sunset, moonrise/moonset and twilight times. The graphic display will show this information for the entire month and the text display will display it one day at a time.
The graphic display will look like this.
The text section will display the current location, a date and the sunrise/sunset, moonrise/moonset and twilight times for this date. When you move the mouse cursor over a day in the calendar the text display will show the calculated times for that day.
If your screen is to small to display both sections simultaneously, for example if you are using a mobile phone, the corresponding text part of the display will be shown when you click or touch on a part of the graphical display.