Do you have a reason to publish a calendar?

If you routinely have events (shows, conferences, tours or similar events) that you want your customers to know about, having a calendar is a good idea.   If you have a calendar, its linked to your page. 

The page format will vary depending on how your page templates look, but each event has a date and a description (in this example, the Sack of Barsoom):

You can list as many dates as you like; they will appear in chronological sequence:

To maintain your calendar, select the option 'calendar pages'.  You can add, change or delete as many events as you like.

Any changes to your calendar are immediately and automatically effective.