it is very easy to use  - the menu on the left allows the user to search by date, city, and type of event, such as 'literatura', for anything related to books and collected works.

a valuable resource to discover upcoming literary events in rio is the website beco literário, that maintains a detailed agenda on this page.

also useful is the website roteiros  literários, publishing the dates for the main literary events by month throughout the entire country of brazil on this link.