- Joined
- Dec 29, 2021
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This morning while recording GPS data from NMEA sentence RMC at 10 readings per second from two independent Garmin GPS-19X, the recorded time stamp jumped backwards in time from 122339.0 to 122336.1. This happened on both GPS-19X units that were running. Both GPS receivers had a complete unobstructive view of the sky. They are co-located about 4 feet apart. Both had been running for over 24 hours. How can this 3 second backward time stamp change happen?