# TimeWindow
<a name="API_TimeWindow"></a>

In a [GetSampledRequests](API_GetSampledRequests.md) request, the `StartTime` and `EndTime` objects specify the time range for which you want Amazon WAF to return a sample of web requests.

You must specify the times in Coordinated Universal Time (UTC) format. UTC format includes the special designator, `Z`. For example, `"2016-09-27T14:50Z"`. You can specify any time range in the previous three hours.

In a [GetSampledRequests](API_GetSampledRequests.md) response, the `StartTime` and `EndTime` objects specify the time range for which Amazon WAF actually returned a sample of web requests. Amazon WAF gets the specified number of requests from among the first 5,000 requests that your Amazon resource receives during the specified time period. If your resource receives more than 5,000 requests during that period, Amazon WAF stops sampling after the 5,000th request. In that case, `EndTime` is the time that Amazon WAF received the 5,000th request.

## Contents
<a name="API_TimeWindow_Contents"></a>

 ** EndTime **   <a name="WAF-Type-TimeWindow-EndTime"></a>
The end of the time range from which you want `GetSampledRequests` to return a sample of the requests that your Amazon resource received. You must specify the times in Coordinated Universal Time (UTC) format. UTC format includes the special designator, `Z`. For example, `"2016-09-27T14:50Z"`. You can specify any time range in the previous three hours.  
Type: Timestamp  
Required: Yes

 ** StartTime **   <a name="WAF-Type-TimeWindow-StartTime"></a>
The beginning of the time range from which you want `GetSampledRequests` to return a sample of the requests that your Amazon resource received. You must specify the times in Coordinated Universal Time (UTC) format. UTC format includes the special designator, `Z`. For example, `"2016-09-27T14:50Z"`. You can specify any time range in the previous three hours.  
Type: Timestamp  
Required: Yes

## See Also
<a name="API_TimeWindow_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/wafv2-2019-07-29/TimeWindow) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/wafv2-2019-07-29/TimeWindow) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/wafv2-2019-07-29/TimeWindow)