# ActivityWindow
<a name="API_ActivityWindow"></a>

Contains the time range during which activity was observed.

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

 ** firstSeenAt **   <a name="guardduty-Type-ActivityWindow-firstSeenAt"></a>
The timestamp at which the activity was first observed.  
Type: Timestamp  
Required: No

 ** lastSeenAt **   <a name="guardduty-Type-ActivityWindow-lastSeenAt"></a>
The timestamp at which the activity was last observed.  
Type: Timestamp  
Required: No

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/guardduty-2017-11-28/ActivityWindow) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/guardduty-2017-11-28/ActivityWindow) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/guardduty-2017-11-28/ActivityWindow)