Per Scott's comment and ignoring the original question, the story is that apparently a firmware update for my robot sweeper included the option of an "automatic" mode with a default of turning it on at 1900 DST (and 1800 when DST ended). I say "apparently" because I was unaware of such an "automatic mode" until a week or so before the end of the forty some days mentioned in Scott's posting.
On my tablet where I follow the robot sweeper and restart it when it complained of blocked brush I finally stumbled into the "new" "automatic" part of the program and saw "1800". Wow! Part of the instructions and information in the automatic mode is in Chinese, so character by character I translated it to English and determined how to turn off the "automatic" option. Even in English these programs are not really user friendly.
In "automatic" the robot uses a program on any one of many Amazon clouds to implement its auto sweeping start up. I blocked 24 ranges of IP addresses in the router from being accessed by the sweeper and with no success I then finally blocked the sweeper from internet access for the 1 minute it was occurring. That did work. I was at the point of trying to block incoming instructions to the sweeper to identify the IP address of the culprit when I posted the original question.
I originally tried to contact the seller/factory of the subject but they claimed no obligation to "export" customers.
Yeah, the background to the question is more interesting than the question.