I've been running the on board datalogger quite a bit lately and it seems to be working for the most part, but there's a lot of stuff that doesn't make sense.
For example, the GPS time data is difficult to decipher. According to the datalogging help page, the time value is the "Time of the week (UTC)" in milliseconds. What on earth does this mean? The GPS start time value is 46,017,250, which corresponds to 12.78 hours (assuming that number is actually in milliseconds...), but I started datalogging on Tuesday May 29th at 16:50, so there's no way that the beginning of the week was 12 hours ago.
Also, I left the datalogger running overnight until 09:04 and the end value is 57,847,500, which indicates that the logger only ran for 11,830,250ms (equal to 3.29 hours). I noticed that the logfile had "wrapped around" in memory when I downloaded it, so it seems like there's a maximum amount of time that the logger can actually log before overwriting data. How can I determine the time and date of my flights from this data? Or will I have to log it the old-fashioned way (pen and paper)?
I have other questions too, but I'd like to start with this for now. Could anyone please explain?