Change time of reminder notification

I am on the West Coast. Appointment reminder notifications default to send at 6:15am EST. My clients are getting their reminder notification at 3:15am. Not very professional. How can I change so my appointment reminder notifications are sent at a decent hour?

Hi James,
If you will contact support@homegauge.com in an email for a better answer. Or call in. I am unsure myself.
Thanks,
Russell