Hello,
I'm still browsing into the Garmin file system and I'm analyzing the "Monitor" folder where there is .FIT files.
I'm trying to figure out how to convert the "timestamp_16" into a regular timestamp value. A topic was open (https://forums.garmin.com/sports-fitness/healthandwellness/f/vivosmart-4/251045/timestamp_16) but there was no answer since a long time... I found some stuff on stack overflow (https://stackoverflow.com/questions/57774180/how-to-handle-timestamp-16-in-garmin-devices) reading that the Garmin timestamp is 631065600 seconds later than the regular epoch timestamp. However, I didn't found a confirmed information about that.
I was wondering if there was any official documentation on how to handle "timestamp_16" timestamps. If not, is the method described here https://www.thisisant.com/forum/viewthread/6374/ correct ? Or should I also substract the Garmin offset given in the stack overflow topic ?
Thanks for your help,
Richard.