# DateDifferenceYears (DateTimeOffset)

| **Name**    | ***DateDifferenceYears with Offset***                                                                                                                           |
| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Syntax      | DateDifferenceYears (DateTimeWithOffset leftDate, Date rightDate)                                                                                               |
| Purpose     | To compute the difference between the specified dates in years.                                                                                                 |
| Description | Subtracts a date time offset value from another date time value and returns result in years by dividing number of days by 365.2425.                             |
| Return Type | Double                                                                                                                                                          |
| Parameters  | <p>leftDate \[System.DateTimeOffset] – Date from which the other date will be subtracted</p><p>rightDate \[System.DateTime] – Date which will be subtracted</p> |

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/0%20\(107\).png)

**Example**

In this example, we will pass date time values to be subtracted to the function transformation object using a *Variables* object.

Where,

*leftDate* = 01/03/2024

*rightDate* = 06/06/2022

<figure><img src="https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/1%20(108).png" alt=""><figcaption></figcaption></figure>

In the output window, you can see that the difference between the provided date time offset, and date time values has been displayed in the form of years.

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/2%20\(108\).png)