# Time Range

Every request covers a crawl-time window that starts at `ts`. By default it is the last 3 days.

## The `ts` parameter

`ts` is a Unix timestamp in **milliseconds** marking the start of your search window (10-digit second timestamps are converted automatically). The window applies to when a review was **crawled**, not published:

```bash
https://api.webz.io/reviewFilter?token=YOUR_TOKEN&q=laptop&ts=1749121632000
```

With `order=desc` and the default `crawled` sort, `ts` marks the end of the window instead - you get reviews crawled before it, newest first.

## The 31-day publication window

Every request also filters on publication date: only reviews **published within the last 31 days** are returned, regardless of `ts`. Older data - up to the last **5 years** - is available via the [News, Blogs, Forums & Reviews Archive](archive-what-is).

> [!NOTE]
> The [Segmentation API](reviews-api-segmentation) window is capped at the last 31 days.