First time i have this issue, i just got home, and for some reason, the lights were still on. I dont see any evidence that i had a power failure while out, but the timer was about an hour behind schedule. Can this happen if the timer is faulty? do they become faulty in this manner? The pegs seem to be in the same place, but lights were only going out at 1:12 am instead of 12:16 like every night for 7 weeks now.