Set the timezone on a Linux server
Change a Linux server's timezone with timedatectl on Ubuntu 24.04 and Rocky 9, see the one symlink it rewrites, and why cron and Docker may ignore it.
#cron
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Why Your Cron Job Doesn't Run
Five reasons a cron job never runs: a minimal PATH, an unescaped percent sign, the wrong crontab, output lost to mail, and a script that assumes your shell.
n8n Timezones and Schedule Triggers
A self-hosted n8n reads three timezone settings, so a schedule trigger can fire hours off. Set TZ, GENERIC_TIMEZONE and the workflow zone right.
Disable wp-cron and use system cron
WP-Cron only fires when someone loads a page, so it stalls on quiet sites and piles up on busy ones. Move it to system cron with WP-CLI, and verify it ran.
Run a program as a systemd service on a VPS
A systemd service keeps your program running: start on boot, restart on crash, log to the journal. How to write one, add a timer, and harden it.