Cron recipe
Cron job every Sunday: the exact expression
The expression
five-field cron
0 3 * * 0Paste it into crontab -e, your platform cron config, or tool.crontap.com/cronjob-debugger to preview the next runs.
What it does
Runs at 3:00am every Sunday. Day-of-week `0` (or `7` on some systems) is Sunday.
When to use it
Weekly full backups
Full database dumps while weekday traffic is away.
Certificate and dependency audits
Weekly security scan before the Monday deploy train.
Run this with Crontap
External HTTP cron hits your URL on this schedule, stores every response, and emails you when a run fails. No daemon on the box, no drift when the server reboots. Pro schedules down to a 1-minute cadence; $3.25/mo annual flat for unlimited jobs.
Related recipes
More patterns in the cron syntax cheat sheet and what is a cron job in Linux.
FAQ
- What is the cron expression for every Sunday?
- Use 0 3 * * 0 (standard five-field cron). Verify the next run times in the free cron debugger before you deploy.
- Can Crontap run this schedule?
- Yes. Crontap fires five-field expressions on your chosen cadence (1-minute floor on Pro), with per-schedule IANA timezones, retries, and failure alerts. Pro is $3.25/mo billed annually.