How would you implement a limited time featured node?
I would do the following, but it assume that you use Panels.


Create a panel page.
Add your first node as Content.  Add a Visibility rule, choose PHP, and add in code that checks your date range based on the current time.
Add your second node as Content.  Add a Visibility rule, choose PHP, and add in inverse of the code above.


I wouldn't be surprised if you can also accomplish this with the Scheduler module, but I am not sure how the URL would be handled in this scenario.