This is a very good intro to systemd timers -- I think you convinced me to finally start using them. Love the "list-timers" thing as well. With cron, it never seemed easy to me to get a picture of all the cron jobs running on a box. I'd need to check crontab for all users, as well as /etc/cron.d/, as well as the daily/hourly/monthly directories.

And in fact I do have a use-case for needing to run something ~5 minutes after the system boots and then every ~12 hours onward from there. It's great that systemd timers has me covered!