Radio Controlled Atomic Clock

I own a Radio Controlled Atomic Clock. It states it's accurate within plus or minus .5 seconds. But when Daylight Saving Time came to an end I thought I'd be a good doobee and change the battery and reset it since it never changed overnight. Well it whirred and spun and spun and whirred and now it is stuck on 04:00:36 with it's analog hands. Then I found this little ditty on the manufacturers website:

It is not unusual for it to take 3-5 nights for signal reception depending on location.

So let's interpolate. Two time changes a year times five days each for ten days the clock does not work. Divided by 365 days is 97.2% accurate throughout the year. I think I'll settle for 99.5% accurate and find a clock that actually will work 365 days a year.
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