I don’t think this is implemented in the standard datetime library, but in principle overriding sub is easily possible and you can define it as you’d wish.

However, I think subtracting a year is a bit ill defined, because it isn’t clear which year you’re subtracting given the leap year issue.

one could certainly implement something like that in python, something like time.now - 10 * time.unit.year

In Europe you still need to give way for cars that are crossing straight from the other side when you want to turn left, and take care of pedestrians that also have green on a right hand turn. Granted, not all crossings are like this, but many are.

Medically: nothing

the obsidian-git plugin. Auto commits and pulls/push every x minutes. Works great for me, I get full version control and works on all my platforms (Linux, Windows, Android). You just need to be careful with your .gitignore and add at least .obsidian/workspace.json to prevent conflicts.

Probably not suitable if you store larger files, but after a year of daily usage with tons of small images I’m still below 150 MB.