Output of sudo dmesg | grep -i rtc as follows
[ 0.537626] RTC time: 16:21:35, date: 10/19/13
[ 1.343624] rtc_cmos 00:06: RTC can wake from S4
[ 1.343727] rtc_cmos 00:06: rtc core: registered rtc_cmos as rtc0
[ 1.343754] rtc0: alarms up to one year, y3k, 242 bytes nvram, hpet irqs
[ 1.350927] rtc_cmos 00:06: setting system clock to 2013-10-19 16:21:35
UTC (1382199695)
I can rule out cats treading on the keyboard - both times the lid was down
and it's set to 'Suspend on lid close' (which works fine as far as I can
tell).
I can also rule out other people in the household - one was in bed the other
has her own Macbook and doesn't use my machine.
