It is possible that they have a page setup with QODs that they fill out weeks ahead of time and have a program that pulls the appropriate day's QOD and posts it on the website.
They don't create any links to this page so it doesn't appear on the main website but it still exists so is found with a search.
Another possibility is that several QODs are filled out ahead of time and the website is programmed to only display the correct one. However since the other ones technically exist they can be found with a search.
Not sure if that's what is happening but it is possible. Pure speculation on my behalf though.
Did it look like the normal QOD page or did it look different?