Jason and gang, This misses one of your spec's but it could be a useful lighted 24 hour GMT clock with battery backup. Should be very accurate--next to a good atomic and probably good enough. 73, Jim http://www.amazon.com/Advance-Electric-Touch-Screen-Alarm/dp/B005VZUYQY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1386287268&sr=1-1&keywords=Advance+Time+6225AT