This is the greatest Linux command ever! Definitely my favorite.
find ./ -name \*.html -printf '%CD\t%p\n' | grep "03/10/08" | awk '{print $2}' | xargs -t -i mv {} temp/

What it does is look (find) for files that end in .html uses the printf option to format the 'find' output, then passes it to grep for searching for a certain date, then awk for printing a certain field, and finally xargs for executing a certain command.

Let's break it down...

The printf part within the find command has the format '%CD\t%p\n'.

%Cx = File's last status change time in the format specified by x. x=D. D=date in the format mm/dd/yy
\t = Horizontal tab
%p = file's name
\n = newline

So basically it outputs the file's last status change followed by a horizontal tab, then the filename, and then a new line. But before it outputs it, it sends it to 'grep' which searches the output and only outputs lines with "03/10/09".

Example so far: (minus the awk, xargs and mv commands)
find ./ -name \*.html -printf '%CD\t%p\n' | grep "03/10/09"
Outputs this: (notice the tab to separate the 2 fields)
03/10/09        ./2005/05/index.html
03/10/09        ./2005/03/index.html
03/10/09        ./2005/04/index.html
03/10/09        ./linked-in.html
03/10/09        ./consumer-electronics/samsung-bribery-news.html
03/10/09        ./technology/iptv/index.html

Now send this output into the awk command (awk '{print $2}') which parses it and pulls out the 2nd column/field (hence the tab character), which is the filename, including the path.

Here's the output you now have after adding awk '{print $2}' in:
./2005/05/index.html
./2005/03/index.html
./2005/04/index.html
./linked-in.html
./consumer-electronics/samsung-bribery-news.html
./technology/iptv/index.html

Next, send this output of "exact path + filename" to xargs for execution in the Linux shell.

The "xargs -t -i mv {} temp/" part basically takes the input from the previous commands (files named .html modified on 3/10/09) and moves (mv) them to the temp/ folder.

The xargs command can do anything.