Setting Up a Timer with systemd in Linux - Linux.com
Renewing Let's Encrypt certificates using a systemd timer • stevenwestmoreland.com
Running scheduled tasks in Docker containers using systemd timer-units
Systemd Timers for Scheduling Tasks - Fedora Magazine
Systemd timers replacement for cron jobs, plus Weechat LetsEncrypt certificate renewal and distribution. – Please note, free wordpress.com sites do not allow the less than or greater than signs to be put