This supposes that burglars work by picking out a person, then waiting until they're not home to go rob their house. Instead, burglars search through a neighborhood to find houses where nobody is home, then break in and steal things. It's the other way around.

Regardless, if you're an average adult in the US, "weekdays between 9 and 5" is a fairly reasonable assumption of when you won't be home. No giant database needed.