Who Hoo - do we have a keeper?
GPSBabel:
http://www.gpsbabel.org/download.html"Garmin serial/USB protocol (garmin)
This format can...
• read and write waypoints
• read and write tracks
• read and write routes
This format has the following options: snlen, snwhite, deficon, get_posn, power_off, erase_t,
resettime, category, bitscategory .
"
-->
"resettime option
Sync GPS time to computer time.
This option is experimental and was added to solve a very specific problem. Certain Garmin units (the
original black and white Vista is known to have this) will sometimes scramble their clock crazy far into the
future (like 2066). When this happens, the GPS itself may or may not work and later conversations with
GPSBabel may fail as the time overflows the documented range. The use of resettime brings the GPS's
internal clock back close enough to reality that the GPS itself can then 'fix' it when it has next a lock."