Just got Midori installed tonight. I had a bit of trouble setting the date & time at first. From an xterm I found that using "date" would always return the error, "date: cannot set date: Operation not permitted".
So I exited to the root shell (via "stop") and from there found that I could use "date". Similarly using the web interface to set the clock also worked... But in both cases it would lose the date whenever I rebooted.
Finally I discovered that I had to set the hardware clock too, via the "hwclock" command. I found that the trick was to first set the date/time to the current UTC (GMT) time, then use "hwclock --systohc" to set the hardware clock to this time. When I next rebooted, the system clock would be synchronized to the hardware clock, with time zone offset.
As far as I can tell, the hardware clock continues ticking while the system is powered off.
Once I get networking set up, I intend to sync the system time from my local SNTP server.