Patient/Client Appointment Displaying in UTC and the Time is Incorrect

The most likely reason is that your patient's/client's Google calendar is set to the incorrect time zone.

If you get the patient/client to check the email Notification sent from Noterro on your behalf, they will see it displays the correct time. When they add the event to their calendar, it is not being evaluated properly, and it is likely due to their Google calendar being set to the incorrect time zone.