Is there a way to get a report about Time of Day for opens for Broadcasts?

Does anyone know if there’s a way to pull a report to show what time of day people open broadcast emails? The date and time is captured on each person’s record, but the only export from the Broadcast Opens link is to export contacts, not export date/time when they opened the email.

We figure, if this info is being captured, it’s the perfect way to know when our audience typically opens their emails – and, therefore, when we should be sending them.