Set Automations and push next action date with a time

I’m using a plug in to Send SMS and Voice messages. I start the workflow with a status change and the status change then sets the date in the next column for the next auto SMS / Call. When this date arrives the SMS/ Call in made and the status is updated which triggers the next date action to be updated with a +1day action.
As these are Calls and SMS I want the automation to make these calls at specific times but the automation doesn’t seem to allow me to include any time peramiters. Obviously don’t want calls to be made to prospects outside of my operating hours. Is there any way to include this?