# Reference Data

## Get supported time zones

 - [GET /api/v1/timezones](https://zonedevelopersdocumentationv1.redocly.app/apis/reference-data/paths/~1api~1v1~1timezones/get.md): This endpoint returns all time zones supported by the platform,
including UTC offsets, display names, and daylight saving information.
The data is served from the platform cache and does not require
any user or account context.
            
Use cases:

- Populate timezone dropdowns in user or account settings
- Display localized time information
- Validate timezone selections during profile updates

## Get supported file types

 - [GET /api/v1/filetypes](https://zonedevelopersdocumentationv1.redocly.app/apis/reference-data/paths/~1api~1v1~1filetypes/get.md): This endpoint returns all file types supported by the platform,
including file extensions and icon metadata used for display purposes.
The data is served from the platform cache and is sorted alphabetically
by file type name.
            
Use cases:

- Validate file uploads against supported file types
- Display allowed file formats in upload components
- Render file-type icons in the user interface