# AssetPropertyTimestamp
<a name="API_AssetPropertyTimestamp"></a>

A structure that contains timestamp information. For more information, see [TimeInNanos](https://docs.aws.amazon.com/iot-sitewise/latest/APIReference/API_TimeInNanos.html) in the * AWS IoT SiteWise API Reference*.

You must use expressions for all parameters in `AssetPropertyTimestamp`. The expressions accept literals, operators, functions, references, and substitution templates.

**Examples**
+ For literal values, the expressions must contain single quotes. For example, the value for the `timeInSeconds` parameter can be `'1586400675'`.
+ For references, you must specify either variables or input values. For example, the value for the `offsetInNanos` parameter can be `$variable.time`.
+ For a substitution template, you must use `${}`, and the template must be in single quotes. A substitution template can also contain a combination of literals, operators, functions, references, and substitution templates.

  In the following example, the value for the `timeInSeconds` parameter uses a substitution template.

   `'${$input.TemperatureInput.sensorData.timestamp / 1000}'` 

For more information, see [Expressions](https://docs.aws.amazon.com/iotevents/latest/developerguide/iotevents-expressions.html) in the * AWS IoT Events Developer Guide*.

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

 ** timeInSeconds **   <a name="iotevents-Type-AssetPropertyTimestamp-timeInSeconds"></a>
The timestamp, in seconds, in the Unix epoch format. The valid range is between 1-31556889864403199.  
Type: String  
Required: Yes

 ** offsetInNanos **   <a name="iotevents-Type-AssetPropertyTimestamp-offsetInNanos"></a>
The nanosecond offset converted from `timeInSeconds`. The valid range is between 0-999999999.  
Type: String  
Required: No

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

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iotevents-2018-07-27/AssetPropertyTimestamp) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iotevents-2018-07-27/AssetPropertyTimestamp) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iotevents-2018-07-27/AssetPropertyTimestamp)