Cron Scheduling Guide

Cron expressions define recurring job schedules using 5 fields: minute, hour, day of month, month, and day of week. They power Linux crontab, Kubernetes CronJobs, AWS EventBridge, and GitHub Actions schedules.

Common cron patterns

• 0 * * * * — every hour at minute 0
• 0 9 * * 1-5 — 9 AM weekdays
• */15 * * * * — every 15 minutes
• 0 0 1 * * — first day of every month at midnight
• 0 0 * * 0 — every Sunday at midnight

Special characters

• * — any value
• */n — every n units
• n-m — range from n to m
• n,m — list of values n and m