Build a standard 5-field cron expression from simple schedule fields, with a plain-English description of what it does.
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A standard cron expression has 5 fields, in order: minute, hour, day of month, month, and day of week, each either a specific value, a comma-separated list, a range (like 1-5), a step (like */15), or * meaning 'every'. This tool builds a valid expression from those five fields and generates a plain-English description for common, recognizable patterns.
'0 9 * * *' runs daily at 9:00 AM. '*/15 * * * *' runs every 15 minutes. '0 0 * * 0' runs weekly at midnight on Sunday. '0 0 1 * *' runs monthly on the 1st at midnight. Cron is used by task schedulers across servers, CI/CD pipelines, and cloud platforms to trigger jobs on a recurring schedule.
0 represents Sunday in standard cron notation, with the days numbered 0 (Sunday) through 6 (Saturday).
Some cron implementations treat this as 'either/or' (OR logic) rather than requiring both to match, behavior can vary slightly between systems (like standard cron vs. Quartz), check your specific scheduler's documentation if you're combining both fields.
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