I'm guessing that Hilton is regretting the decision to 'lock down' the time on these clocks. The manhours to fix the clocks must be killing them. I've had too many clocks showing 6 pm when it was 6 am, or just being off by 5 minutes where I've called housekeeping to come fix them. And just imagine what happens if a hotel loses power long enough for the battery backups to die out.