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How accurate is GPS time synchronization?

accurate GPS synchronization time
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How accurate is GPS time synchronization?

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GPS time synchronization is highly accurate, but your results will vary depending on your receiver and computer. The Garmin GPS35 receiver is accurate to within a millisecond of UTC; however, the time that is ultimately synchronized to your computer will not be as accurate. Why? Because computer systems are not fast enough nor consistent enough for better accuracy. Our tests show an accuracy of +/- 0.1 second using the Garmin GPS35.

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