Alright, there is a high probability that I've missed something very basic here. I've set my new update policy (script by UESCDurandal as described in https://jamfnation.jamfsoftware.com/discussion.html?id=5890). Absolutely awesome script BTW. In any event, I've scoped this to the groups I need it to, however I've tried to set the policy to run on Monday - Thursday 2:30pm to 6pm. This means that I've set my date and time limitations as follows:
Do Not execute On: Sunday, Friday, Saturday
Do Not Execute Between 6:00pm and 2:30pm (proper logic form what I remember).
While the policy DID NOT run on Saturday or Sunday, it did run on Friday, and it IS running at any time fo the day (so say to logs).
In any event, I hope that I'm missing something very basic. It's the start of the new year and my brain has probably run as far away as possible.