From the TLA Snapshot Website:

What is it?

Library Snapshot Day provides a way for libraries of all types across Texas to show what happens in a single day in their libraries. It is a “snapshot” of a day in the life of your library. To participate, pick a single day in the month of October to gather and submit information about your library. The purpose of Library Snapshot Day is to allow the statewide library community to gather similar data that we can use to promote libraries.

How does Library Snapshot Day work?

Alkek Library will be participating by collecting data, comments from our patrons, stories, and photographs. Then we will upload the information we gather to the website and to Flickr by November 4, 2011.

You can also see the full report from Texas Snapshot Day last Spring here.