Than you for the reply.
This is a great feature of this gps chip. I dont know if I recall reading that specifically in any documentation.
Couple more questions:
1) As far as detecting failures in the gps. If the time is kept on the RTC, and a GPS message is reported invalid. Can I trust the timestamp to be valid still? What does this tell me about the timestamp in an invalid message?
2) Your comment regarding the battery... wasnt sure if you were assuming i put it back in or not. What happens if the battery dies? Will the shield continue to work? Im guessing it does, it will just take longer to align. How can I detect this failure mode? Im guessing I will have enough time to check for that "two min" before midnight as a failure mode during this extended time for alignment.
3)Just curious... Any idea why the clock resets back to "two min" before midnight, instead of midnight?