# Shorthand expressions

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### Shorthand Expressions

| **Preset**   | **Meaning**                                                                   | **Cron Equivalent** |
| ------------ | ----------------------------------------------------------------------------- | ------------------- |
| `@hourly`    | Run once an hour at the beginning of the hour.                                | `0 * * * *`         |
| `@daily`     | Run once a day at midnight.                                                   | `0 0 * * *`         |
| `@weekly`    | Run once a week at midnight on Sunday morning.                                | `0 0 * * 0`         |
| `@monthly`   | Run once a month at midnight on the first day of the month.                   | `0 0 1 * *`         |
| `@quarterly` | Run once a quarter at midnight on the first day.                              | `0 0 1 */3 *`       |
| `@yearly`    | Run once a year at midnight on January 1.                                     | `0 0 1 1 *`         |
| `None`       | The DAG will not be scheduled; only triggered manually or by external events. | N/A                 |
| `@once`      | Run only once, as soon as possible.                                           | N/A                 |

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