# DayOfYear (Date dateTime)

| **Name**    | ***DayOfYear***                                                                  |
| ----------- | -------------------------------------------------------------------------------- |
| Syntax      | DayOfYear (Date dateTime)                                                        |
| Purpose     | To get the day of the year.                                                      |
| Description | Returns an integer between 1 and 366 representing the day of year as an integer. |
| Return Type | Int64                                                                            |
| Parameter   | dateTime \[System.DateTime] – Date for which the day will be returned            |

**Example**

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/0%20\(141\).png)

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

Where,

*dateTime* = 10/20/2022

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/1%20\(142\).png)

In the output window you can see that the day of the year has been returned.

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/2%20\(142\).png)