Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Excellent except for time zone problem

I've had this for several years and found it to be excellent except for a recent problem with the time zone. I set it to EST every day and it is reset to PST the next morning. Setting it to GST worked for about a year, but now it resets to PST no matter what time zone I set it to. I couldn't find anyway to disconnect the automatic update. Different room placements don't help. The outside temperature reading has been reliable. I would rate this as a 5 if I could fix the time zone problem.