Executive report - mail timing

hey all,

I wanted to know if there is a way to change the time executive reports are sent,

it currently only mails the reports when the system is running at or around 1 AM,
but I prefer to shut it down when I go to bed(power usage), wich is like 23:00 H, or even earlier.

is it by any chance possible to change this timing?

kind regards,
Frank