user@host:~$ systemctl cat snap.certbot.renew.timer
# /etc/systemd/system/snap.certbot.renew.timer
[Unit]
# Auto-generated, DO NOT EDIT
Description=Timer renew for snap application certbot.renew
Requires=snap-certbot-652.mount
After=snap-certbot-652.mount
X-Snappy=yes
[Timer]
Unit=snap.certbot.renew.service
OnCalendar=*-*-* 02:32
OnCalendar=*-*-* 15:44
[Install]
WantedBy=timers.target
The original deb package for certbot has a systemd timer with the RandomizedDelaySec directive (see here), that allows for randomized time of day renewals. The snap package seems to cristallize two hours. Is it not possible to use RandomizedDelaySec ?