Q. Is there a source that lists each session of Congress by date?

Locate the chart easily via the library database Congressional Publications: http://ezproxy.hofstra.edu/login?url=https://proquest.com/congressional?accountid=11449

Once in the database, click on the ? >>>HELP link located in the upper right corner of the screen. 

You will see a help guide for researching Congress. Click on the LEGISLATIVE PROCESS tab.  You will see a link for the Sessions of Congress: https://proquest.libguides.com/congressionalhelp/sessions