[Unit]
Description=Run stonks every 5 hours

[Timer]
# Fires at 00:00, 05:00, 10:00, 15:00, 20:00 (wall-clock aligned, so
# Persistent=true has a predictable catch-up time if the machine was off).
OnCalendar=*-*-* 0/5:00:00
Persistent=true

[Install]
WantedBy=timers.target