Sure, this is possible. Here are the steps:
First of all, open your project. After you're done with editing, click the Print button. In the new window, click Settings to manage paper formats.
For example, we need a 17" x 22" format. Click Add and type in the name and dimensions. Hit Save to add this format to the list and use it later.
Now select the new size, click Print and here you go! If the calendar doesn't fit in, check its original dimensions in File > Page Settings.