Is it possible to have unique date/time within a range using start/end date?

Hello all,

I'm using Drupal 7.12 and unique_field-7.x-1.0-rc1.

Is it possible to have a unique field where the date/time doesn't overlap from node to node? For example say in NodeID 123 I have a date field with the value...

MyDateField = 4/23/2012 10:00 TO 4/23/2012 11:00

I would like it to be impossible to add another node where the date field would equal...

MyDateField = 4/23/2012 10:30 TO 4/23/2012 11:30

Thanks for reading,
-Tim