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cron-parser

Read, write, and debug cron expressions with field reference, scheduling logic, and common patterns.

skills/cron-parser/SKILL.md

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## Overview

Cron expressions are write-only for most people — everyone copies them, few can read them. But
misreading a schedule means backups that never run or jobs that fire 60x too often. This skill makes
cron legible: the five fields, special strings, the day-of-month/day-of-week gotcha, and debugging
techniques for "why didn't it run?"

## When to use

- Writing cron schedules for jobs and automation

- Reading and understanding existing cron expressions

- Debugging jobs that run at wrong times (or not at all)