the_loop used for time

We are looking to use WPMU as a newsletter tool. That said, is there a way to get the_loop() to just display all the posts from the last day posts were made? We plan on having a (bi-)weekly release schedule, but each item in the newsletter will be its own post, so my thinking was to just identify the last day posts were made, and display everything from that day. Can the_loop() do that, or am I barking up the wrong tree?