# formatRelativeTime

**Kind:** Function

**Source:** [`atloria-monorepo/apps/web/src/app/p/[slugId]/components/uiStrings.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/apps/web/src/app/p/[slugId]/components/uiStrings.ts#L956)

Localized relative time ("3 hours ago" / "قبل ٣ ساعات").
Uses Intl.RelativeTimeFormat so ANY documentation language gets correct
plural/dual forms for free; <60s uses the catalog's "just now".

## Signature

```ts
function formatRelativeTime(input: string | Date, lang: string | null): string
```

## Parameters

| Name | Type |
|---|---|
| `input` | `string | Date` |
| `lang` | `string | null` |

**Returns:** `string`