---
id: fast-foundation.dayformat
title: DayFormat type
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [DayFormat](./fast-foundation.dayformat.md)

## DayFormat type

A type representing the different day formats

<b>Signature:</b>

```typescript
export declare type DayFormat = "2-digit" | "numeric";
```