Punchh offers many campaign options to clients. Some campaign options have a Time Zone configuration available, but some campaign options do not. The Signup campaign will trigger in UTC time.
As an example, if a Signup campaign is made to gift the reward on 12th Nov then whatever the timezone of the business the signup campaign will trigger according to the UTC timezone.
If a business timezone is PST then 12th Nov 11:59 PM UTC is equal to 13th Nov 07:59 AM PST.