systemctl timers
This is about working with systemd timers.
See also other aspects of systemctl.
List Timers
systemctl list-timers
produces:
alex@exi:~> systemctl list-timers
NEXT LEFT LAST PASSED UNIT ACTIVATES
Sat 2024-06-08 10:26:40 PDT 23min Sat 2024-06-08 09:52:44 PDT 10min ago fwupd-refresh.timer fwupd-refresh.service
Sat 2024-06-08 10:33:15 PDT 30min Sat 2024-06-08 09:32:04 PDT 31min ago anacron.timer anacron.service
Sat 2024-06-08 21:48:31 PDT 11h Sat 2024-06-08 08:31:28 PDT 1h 31min ago motd-news.timer motd-news.service
Sun 2024-06-09 00:00:00 PDT 13h Sat 2024-06-08 00:00:00 PDT 10h ago dpkg-db-backup.timer dpkg-db-backup.service
Sun 2024-06-09 00:00:00 PDT 13h Sat 2024-06-08 00:00:00 PDT 10h ago logrotate.timer logrotate.service
Sun 2024-06-09 00:12:38 PDT 14h Sat 2024-06-08 06:37:34 PDT 3h 25min ago apt-daily.timer apt-daily.service
Sun 2024-06-09 03:10:53 PDT 17h Sun 2024-06-02 03:10:49 PDT - e2scrub_all.timer e2scrub_all.service
Sun 2024-06-09 06:40:14 PDT 20h Sat 2024-06-08 06:30:30 PDT 3h 32min ago apt-daily-upgrade.timer apt-daily-upgrade.service
Sun 2024-06-09 08:26:34 PDT 22h Sat 2024-06-08 08:26:34 PDT 1h 36min ago update-notifier-download.timer update-notifier-download.service
Sun 2024-06-09 08:36:54 PDT 22h Sat 2024-06-08 08:36:54 PDT 1h 26min ago systemd-tmpfiles-clean.timer systemd-tmpfiles-clean.service
Sun 2024-06-09 08:54:30 PDT 22h Sat 2024-06-08 08:35:17 PDT 1h 27min ago man-db.timer man-db.service
Sun 2024-06-09 10:53:10 PDT 24h Sat 2024-06-08 00:06:58 PDT 9h ago plocate-updatedb.timer plocate-updatedb.service
Sun 2024-06-09 13:40:37 PDT 1 day 3h Mon 2024-06-03 04:43:14 PDT 5 days ago update-notifier-motd.timer update-notifier-motd.service
Mon 2024-06-10 00:22:51 PDT 1 day 14h Mon 2024-06-03 00:12:48 PDT 5 days ago fstrim.timer fstrim.service
Mon 2024-06-10 07:14:07 PDT 1 day 21h Mon 2024-06-03 06:46:03 PDT 5 days ago apt-xapian-index.timer apt-xapian-index.service
15 timers listed.
Pass --all to see loaded but inactive timers, too.