Very interesting.
Turns out that with that almost full moon last night, I could see some weirdness on one V3 after all. A definite abrupt shadow jump at 2:00am, but on android devices only.
Could not reproduce the shadow jump on iOS, but did notice the timeline looping back to 1:00am while the timestamp on the video was doing its own thing.
Pulled the card and confirmed the filenames you show, plus apparently GMT time stamps
100% agreement on remote FTP access to the micro-SD cards! 