I was thinking about adding this to mine, but just found it easier to have my laptop send the empeg the control character to go into sleep at a certain time. The Mark 2 will make this easier, as I can then set it to turn off at this time every night. The Mark 1 does have a RTC, but it dosen't run when the system is unpowered. (I set the date right about 2 weeks ago, and it's a few days off now.)

My empeg site is:http://24.236.3.131/empeg/