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

# Format Date (Locale Variable)

> Format a date with locale from a variable

## Overview

The `format-date-locale-var` transformation formats a date value using a locale provided as a variable. This is similar to [Format Date](/advanced-guide/transformations/format-date), but the output locale comes from a variable instead of a static option.

## Syntax

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
format-date-locale-var(<variable>, <locale-variable>, format="DATE_SHORT")
```

## Parameters

| Parameter         | Type     | Required | Description                                                                                                      |
| ----------------- | -------- | -------- | ---------------------------------------------------------------------------------------------------------------- |
| `variable`        | date     | Yes      | The date value to format                                                                                         |
| `locale-variable` | variable | Yes      | The locale variable (e.g., `"en-US"`, `"fr-FR"`)                                                                 |
| `format`          | string   | Yes      | The predefined format key (see [Format Date](/advanced-guide/transformations/format-date) for available formats) |
| `timezone`        | string   | No       | The timezone to use (e.g., `"UTC"`, `"Europe/Paris"`). Defaults to `"UTC"`                                       |
| `inputLocale`     | string   | No       | Locale used to parse the input date: `"pt"`, `"nl"`, `"en"`, `"de"`, `"ja"`, `"zh"`, or `"fr"`                   |

## Examples

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
format-date-locale-var(<variable>, <locale-variable>, format="DATE_SHORT")
format-date-locale-var(<variable>, <locale-variable>, format="DATETIME", timezone="Europe/Paris")
```