Is there a way in AAM to build segments based on time of day? It's possible to do in AA and share it but then it is not a real-time segment in AAM.
I want to build a segment that captures people who purchase from the site between 11 am and 2 pm and later in the day exclude them from receiving media impressions. I'd also need them to drop out of the segment so they are back in the media pool the next day.
I would look into the data your sending AAM, and if possible capture the current time in 24 hour format, and send in on a specific evar or prop.
For example evar55 (random number) could contain all the value of the 24 hour times: 1100, 1345, 1400, etc.
Your trait would be (evar55 <= '1400' AND evar55 >= 1100).
This only really solves half the question.. once the user has this trait on their profile, there is no way to exclude the user, unless you had other traits set to capture the time outside that 11-2 window, and used that trait in a AND NOT segment rule. To drop out of the segment for the media pool the next day, set both traits to use a TTL of 1 day or segment rule recency of <= 1.