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Ready to monitor your cron jobs?
UptimeEye tracks scheduled tasks and alerts you instantly when they fail or run late.
- Automatic failure detection
- Instant alerts via Slack, Email, PagerDuty
- Track execution history
What is a cron expression?
A cron expression is a string of 5 fields separated by spaces that define when a scheduled task should run. Each field represents a specific time unit:
- *Minute (0-59)
- *Hour (0-23)
- *Day of Month (1-31)
- *Month (1-12)
- *Day of Week (0-6, where 0 is Sunday)
Example: 0 9 * * 1-5 means “At 09:00, Monday through Friday”
Cron expression syntax guide
Special characters you can use:
*(asterisk) = any value,(comma) = value list separator-(hyphen) = range of values/(slash) = step values
Examples:
*/15 * * * *= Every 15 minutes0 0 * * 0= Every Sunday at midnight0 9,17 * * *= Daily at 9 AM and 5 PM