Time Standard Dilemma



Due to the recent time change, I went about to adjust all of the clocks
in my house, digital and analog. This past summer, I had purchased a new
wristwatch, a Citizen Eco-Drive powered by light. I had set this watch
by the clock on my GPS.

When it came time to set my clocks, I rechecked my wrist watch against a
recently acquired "atomic clock" which is set by radio waves from NIST.
They differed by about 15 seconds. Hmmm, wrist watch must has slowed
down. For chuckles, I checked against the GPS. No, it was accurate.

I then compared the GPS clock to the "atomic clock" and found the 15
second difference. And as far as I can tell, it is exactly 15 seconds.
repeated attempts to resynchronize the "atomic clock" to the NIST
standard always results in a 15 sec. difference.

OK, I bet the "atomic clock" is the culprit for three reasons:

1: The GPS clock agrees with the local broadcast beef from the radio
station

2: The GPS cost about 20 times the "atomic clock."

3: The GPS clock agrees with the computer clock which is also
synchronized by the internet.

Could it be that the circuity in the "atomic clock" takes 15 seconds to
adjust the output? If so, why not compensate for this?

Any ideas?

Al

PS:
.



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