demonstrate Automatic Hardware Clock Synchronization By the Kernel (11 minute mode) without ntpd

From the man page of hwclock:

This mode (we'll call it "11 minute mode") is off until something turns it on. The ntp daemon xntpd is one thing that turns it on. You can

Ok, I have a virtualbox linux guest without ntp client. There's a 2 minute difference:

$ date
Tue Mar 11 18:09:54 MSK 2014
$ hwclock 
Tue 11 Mar 2014 06:08:23 PM MSK  -0.409965 seconds

How to enable 11 minute mode?

$ adjtimex --print
       status: 64

64 means "disabled", right? http://manpages.ubuntu.com/manpages/karmic/man8/adjtimex.8.html

64 clock unsynchronized

I thought this will enable the mode

$ sudo adjtimex --status 0

But it didn't. Status is still 64