Problem definition:

We are trying to route our tickets to certain service desk users based on what time the ticket was created. We don't want any
interaction or error on the customer's side to influence how a ticket gets routed. Rather, we essentially want all tickets from around the world created between a certain time frame (let's say 8:00am-7:00pm MST for example) to be routed to one service desk user, and then all tickets that are not created during that time frame to be routed otherwise.

Suggest Resolution

Create an automation trigger to verify the timezone that the ticket was sent.