The test I run on your account is:

<<List>>  19 responses

<<Search>>

Keyword search: 'thanksgiving' => 2 responses

Unit search: NAS => 4 responses

Range search : check for no day input.

(1) Start from December 1, 1998 => 8 responses.

(2) End by December 1, 1998 => 11 repsonses.

(3) Start from November 25 and end by December 1, 2000 => 10 responses.

Combined search:

Start from November 25 and end by December 1, 2000;
Unit: Unviersity
Keyword: holiday
    =>  3 responses.

You should run the test yourself and see the effect.

Most of you are doing pretty good in this homework.  Some of you do not include url so I spent some time to figure out where your pages are.  Minor problems here and there, but in general, I am satisfied.