regular meeting day - Senate Rule XXVI requires that all committees designate at least one day a month on which it will meet to transact business. Additional meetings may be called by the chairman or by demand of a majority of a committee's members.
Congressional Sessions lists all Congresses and corresponding years - from 1789, when the 1st Congress met, through the current Congress.
You can access legislative information, by bill number or key words, from the THOMAS Web site. Information from the present back to the 93rd Congress (1973) is available on THOMAS.
For information on the Senate, Congress, the legislative process and the federal government, the Virtual Reference Desk is a good place to begin.