Just noticed something that's pretty irrelevant, but from a security perspective, I thought was odd.
When I'm writing, I save my rough copy on a USB stick. That way I can easily transport it for editing on whatever computer I happen to be on. Typically every day or two, I copy the files that I have changed or edited from the USB to my actual computer HDD (which also automatically makes a back-up on my server HDD as well). I just noticed tonight that the date modified time stamp on all files on my HDD has been changed to reflect DST.
For example, a file that on my USB says was last modified on 11/01/19 at 10:15 pm shows it was modified on 11/01/19 at 9:15 pm. I know your computer automatically adjusts for DST - I didn't know it would do so for all SAVED files, because now the majority of my USB files show, literally, an hour difference in the time modified.
Just a curiosity, but one that has me going, why would it change the time modified like that?