It might be pretty late, but you CAN change it in firefox (as well as in forks). I just put this in my user.js

user_pref("intl.date_time.pattern_override.connector_short", "{1} {0}");
user_pref("intl.date_time.pattern_override.date_short", "yyyy-MM-dd");
user_pref("intl.date_time.pattern_override.time_short", "HH:mm");

In gnome there's dconf

Personally, I think methanation may be promising, since you can use the existing infrastructure.

But what if we gave each dinosaur an oxygen mask?

Slugs do not work that way! Good night!

Insane Clown Posse would like to have a word with you

PAIN THRESHOLD [Challenging: Failure] - The chair you're sitting on has got to be the most uncomfortable chair in the world. It's *violating* your backside.

I did fall asleep reading a particularly erotic chapter in my grandmother's journal.

Alien drunk drivers 👽🍺

Personally, I like starship, and how it's consistent across different shells. I mostly use defaults, but with line break before command.

They asked me how well I understood theoretical physics.

I said I had a theoretical degree in physics.

They said welcome aboard.

Walk, walk, fashion, baby

Work it, move that bitch crazy