> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omni.co/llms.txt
> Use this file to discover all available pages before exploring further.

# day_of_month

> Filters time fields by the day of the month.

Filters time fields by the day of the month. Returns rows where the date falls on the specified day of the month.

## Syntax

```yaml theme={null}
<time_field>:
  day_of_month: <day_number>
```

## Properties

<ParamField path="time_field" type="string" required>
  The time/date field to filter on, specified in the format `view_name.field_name`.
</ParamField>

<ParamField path="day_of_month" type="number" required>
  The day of the month to filter for. Value must be a number between `1` and `31`.
</ParamField>

## Examples

```yaml title="First day of month" theme={null}
users.created_at:
  day_of_month: "1"
```

```yaml title="Not the first day of month" theme={null}
users.created_at:
  not_day_of_month: "1"
```