> For the complete documentation index, see [llms.txt](https://docs.fabricplan.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fabricplan.com/documentation/plan/planning-sheets/formula-syntax/date-functions/day.md).
# DAY
The *DAY* function extracts the day value from a date. This function is commonly used to analyze and group data based on the day of the month.
{% hint style="info" %}
**Note**
The input dates should be in `MM/DD/YYYY` format. References are also accepted as arguments.
{% endhint %}
#### Syntax
```javascript
DAY(date)
```
#### Arguments
* `date`: The input date.
#### Return value
Returns the day value from the specified date.
#### Example
```javascript
DAY(Open Date)
```
Extracts the day value from the *Open Date* field. For example, if *Open Date* is `05/22/2026`, the function returns `22`.
#### Excel equivalent
[DAY](https://support.microsoft.com/en-us/office/day-function-8a7d1cbb-6c7d-4ba1-8aea-25c134d03101)
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