> **Experimental**
>
> `@aws-cdk/aws-iot-alpha` is an [**experimental**](/stability) (alpha) package: its API may change in any release, without a major version bump.
# DayOfMonth

The day of the month on which the scheduled audit takes place.

- Stability: [Experimental](/cdk/api/stability.html)
- Source: [`lib/scheduled-audit.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0-alpha.0/packages/@aws-cdk/aws-iot-alpha/lib/scheduled-audit.ts#L180)

## Example

```ts
declare const config: iot.AccountAuditConfiguration;

// Daily audit
const dailyAudit = new iot.ScheduledAudit(this, 'DailyAudit', {
  accountAuditConfiguration: config,
  frequency: iot.Frequency.DAILY,
  auditChecks: [
    iot.AuditCheck.AUTHENTICATED_COGNITO_ROLE_OVERLY_PERMISSIVE_CHECK,
  ],
})

// Weekly audit
const weeklyAudit = new iot.ScheduledAudit(this, 'WeeklyAudit', {
  accountAuditConfiguration: config,
  frequency: iot.Frequency.WEEKLY,
  dayOfWeek: iot.DayOfWeek.SUNDAY,
  auditChecks: [
    iot.AuditCheck.CA_CERTIFICATE_EXPIRING_CHECK,
  ],
});

// Monthly audit
const monthlyAudit = new iot.ScheduledAudit(this, 'MonthlyAudit', {
  accountAuditConfiguration: config,
  frequency: iot.Frequency.MONTHLY,
  dayOfMonth: iot.DayOfMonth.of(1),
  auditChecks: [
    iot.AuditCheck.CA_CERTIFICATE_KEY_QUALITY_CHECK,
  ],
});
```

## Properties

- `day`: string — The day of the month.

- `LAST_DAY`: [DayOfMonth](/cdk/api/v2/docs/@aws-cdk_aws-iot-alpha.DayOfMonth.html) (static) — The last day of the month.

## Methods

- `of(day: number): DayOfMonth // chainable` (static) — Custom day of the month.

  **Parameters**

  - `day` — the day of the month.