My C3200 has pdaxii13-akita5.3 installed to flash.
I suspended it last night by using the button on the front. (left of SD slot)
Today, I turned it back on by using the same front mounted button, and the date was 2 days off (last Thursday) and the clock was off by 8 hours.
I did some searching, but I thought this problem has been resolved.
BTW, my Z was plugged into the external power supply overnight.