Waaaay back when I was a pharmacist practicing in a hospital, we used to prepare IVs, some of which were due to be started at midnight. I felt it was critical that everyone understood the when to administer them. As such, I instituted a policy that all meds scheduled for 'midnight' administration were labled "12:01AM, x/xx/xxxx. In this way, there could be no confusion.

Scott, if you read this, you might consider this suggestion as a simple IT change that will avoid a lot of confusion/phone calls.