From the TLA website:
TEXAS LIBRARY SNAPSHOT DAY PROVES Texans Love Libraries!
How does Library Snapshot Day work?
Although the standard date is October 31, libraries can pick any single day in October and promote that day to their community and students.
1. Let folks know you’ll be “snapping” a shot of the library’s activities that day. It’s your way of asking patrons to say “cheese!”
2. Collect data, stories, and photographs.
3. Upload that information to the Texas Library Snapshot Day Web form. Be sure to upload your information by November 15.
Libraries can use the information gathered in their own activities, see what other libraries are doing, and get a sense of statewide library usage. All the information is accessible to participating libraries.
Visit the TLA website to find out how to advocate for Texas libraries