Magento's SpecialToDate does not include a time stamp so any deal runs until midnight.

What I would like to do is to be able to set the time as well as the date.

I was thinking of changing the SpecialToDate date attribute to a text filed, would this work?

my second option is "If the special price didn't recognize the time" where would I hard code a new atttribute(.html) that the special Price uses to check the date?