Editing your automatically logged start and stop times for sleep tracking - Specific question

[Condorman77]

I love using my charge three for sleep tracking, and I noticed that I can edit the start time and stop time in my sleep log.  

My question is how is the start time and stop time defined.

Is the start time, the time that you physically get into bed?

or 

Is the start time, the time that it detects you have fallen asleep?

Same question for stop time, is the stop time the time you get out of bed or the time of your last wake up. Example, your alarm goes off at 6 AM but you get out of bed at 6:10 AM, what is the stop time in this case?

[Rich_Laue]

Fit States it is the social sleep times @Condorman77