How to read picture file names

1

Could someone decode the file names from our camera folder?

I get that its time stamped etc., but I would love a decoder ring please.

2

Pictures in folder - CameraSN_shutterStartTime_ShitterFinishTime

3

serial number - 1335654055965932_1335654055970766… so start time and finish time of shutter…

So the only number that changed, it went from 65932 to 70766… 4,834. Milliseconds?

This is where I get confused.