when using the tlog extractor program to extract mission data from Mission Planner the default date and time columns extracted by tlog extractor program are 4 seconds behind the mavlink_system_time_t.time_unix_usec.
why is there a discrepancy in the time?
where does the default time and date data from the tlog extractor come from? what is the source? GPStime? Universal Coordinate time? Time from the internet (which is usually Universal Coordinated time).
thanks in advance.