If you are trying to setup a post checkin campaign that guests can receive once per day, regardless of when they checkin and wondering if the Guest frequency will be for 24 hours from start time or an actual day (12am - 11:59pm), It should be noted that the Post check campaign runs on the basis of the receipt time. Thus, guest frequency goes off as per the actual day (12am - 11:59pm).
All Post Checkin campaigns are based on receipt time, rather than scan time. Therefore, if you select a particular day then all the checks with that particular date (irrespective of timezone) will be eligible for these campaigns.
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)