First post, by akula65
- Rank
- Oldbie
You may want to check any GPS devices you have (particularly older models), and make sure that the device is displaying the correct date. At 23:59:42 UTC on 6 April 2019 a GPS Week Number Rollover Event occurred, and some GPS devices may not display the correct date as a result. More information about the event is available here:
https://www.gps.gov/
https://ics-cert.us-cert.gov/sites/default/fi … on_GPS_2019.pdf
The second link also indicates the following:
Additionally, some GPS devices that calculate the WN value from a device-specific date rather than the start of the current GPS Time Epoch may provide incorrect UTC at some other device-specific date.
In other words, even if your GPS device shows the correct date now, it could still fail at a future date if your manufacturer has made poor firmware choices.
Unfortunately, I have three devices manufactured by DeLorme that have this date problem, and they had failed before 6 April. Models PN-40 (less than 10 years old) and BT-20 show incorrect year, month and day, although position information continues to be correct. Some DeLorme users have reported this type of failure at least as early as last year. DeLorme was acquired by Garmin in 2016, so DeLorme owners are out of luck as far as firmware upgrades go.
The Pharos iGPS-360 device that came with Microsoft Streets & Trips 2006 is still correct (for now).
Hope you have better luck with your devices.