What 0 2 * * * means
Two in the morning is the traditional maintenance window: reindexing, cleanup and vacuum jobs that want quiet and a completed midnight batch upstream.
In plain English, cron reads this as: at 02:00 am, every day.
Field-by-field breakdown
| Field | Value | Meaning |
|---|---|---|
| Minute | 0 | at 0 |
| Hour | 2 | at 2 |
| Day of month | * | every value |
| Month | * | every value |
| Day of week | * | every value |
Editing this schedule
To adjust this expression or explain a different one, open the full cron expression parser — it explains any crontab line, lists upcoming runs and breaks down each field as you type. New to the syntax? The practical guide to cron expressions walks through every field with worked examples.