# IsValid(RationalTime)

> Validity check.

## Definition

* **Type:** Method
* **Namespace:** [Unity.IntegerTime](/engine/6000.5/script-reference/unity/integertime.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public static bool IsValid(this RationalTime value)
```

### Parameters

**** (\[RationalTime]\(/engine/6000.5/script-reference/unity/integertime/rationaltime)): 

### Returns

| Type                                                          | Description                                              |
| ------------------------------------------------------------- | -------------------------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the TicksPerSecond is valid and false otherwise. |