On 6 May 2012 06:46, gjs <[email protected]> wrote: > > You can get time accurate to the second from GPS, particularly if you > monitor the NMEA strings. >
The OP was concerned about sub-second accuracy, but even second accuracy isn't always available. This was discussed in another thread a week or so back. In general the above statement is true, however on a cold start the time reported is either GPS Time (currently 15 sec ahead of UTC), or GPS Time less the GPS/UTC offset current when the GPS firmware was written. In my case, the SiRF III receiver defaulted to 14 sec, so it was one second out. The problem is I've never seen a GPS report the UTC/GPS offset it's using, so there is no way to tell if the "UTC time" reported is correct, off by one second, off by 15 sec, or whatever. Also note that the GPS/UTC offset is only sent once every 12.5 minutes. So you can have a super-accurate position lock, but still have the wrong time! -- Andrew -- You received this message because you are subscribed to the Google Groups "Android Discuss" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/android-discuss?hl=en.
