# InstanceTimeline
<a name="API_InstanceTimeline"></a>

The timeline of the instance lifecycle.

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

 ** CreationDateTime **   <a name="EMR-Type-InstanceTimeline-CreationDateTime"></a>
The creation date and time of the instance.  
Type: Timestamp  
Required: No

 ** EndDateTime **   <a name="EMR-Type-InstanceTimeline-EndDateTime"></a>
The date and time when the instance was terminated.  
Type: Timestamp  
Required: No

 ** ReadyDateTime **   <a name="EMR-Type-InstanceTimeline-ReadyDateTime"></a>
The date and time when the instance was ready to perform tasks.  
Type: Timestamp  
Required: No

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

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/elasticmapreduce-2009-03-31/InstanceTimeline) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/elasticmapreduce-2009-03-31/InstanceTimeline) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/elasticmapreduce-2009-03-31/InstanceTimeline)