Looks like Ask Jeeves wins this contest. Ask is the only large search engine 'smart enough' to give me some information right off the bat when conducting a search on "labor day".
![ask-labor-day.gif](https://www.seroundtable.com/archives/ask-labor-day.gif)
Searches on "Labor Day" at:
Oh, I probably won't be posting much today. But you can expect at least one more entry here throughout the day.