sudo systemctl list-timers --all
# output:NEXT LEFT LAST PASSED UNIT ACTIVATES
Fri 2023-02-17 23:54:54 CST 8h left Thu 2023-02-16 23:54:54 CST 15h ago systemd-tmpfiles-clean.timer systemd-tmpfiles-clean.servi>
Sat 2023-02-18 00:00:00 CST 8h left Fri 2023-02-17 00:00:00 CST 15h ago atop-rotate.timer atop-rotate.service
Sat 2023-02-18 00:00:00 CST 8h left Fri 2023-02-17 00:00:00 CST 15h ago logrotate.timer logrotate.service
Sat 2023-02-18 00:00:00 CST 8h left Fri 2023-02-17 00:00:00 CST 15h ago man-db.timer man-db.service
Sat 2023-02-18 04:19:48 CST 13h left Fri 2023-02-17 05:29:22 CST 9h ago pve-daily-update.timer pve-daily-update.service
Sat 2023-02-18 05:18:55 CST 14h left Fri 2023-02-17 06:45:48 CST 8h ago apt-daily.timer apt-daily.service
Sat 2023-02-18 06:41:05 CST 15h left Fri 2023-02-17 06:02:36 CST 9h ago apt-daily-upgrade.timer apt-daily-upgrade.service
Sun 2023-02-19 03:10:12 CST 1 day 12h left Sun 2023-02-12 03:10:19 CST 5 days ago e2scrub_all.timer e2scrub_all.service
Mon 2023-02-20 00:37:59 CST 2 days left n/a n/a fstrim.timer fstrim.service
n/a n/a n/a n/a pvesr.timer