<!-- Do not edit this file. It is automatically generated by API Documenter. --> [`DurationValue`](DurationValue) › [`addToDate`](DurationValue/addToDate) ## DurationValue.addToDate() method Modifies the provided by this duration. 1.10.0 **Signature:** ```typescript addToDate(value: DateValue, subtract?: boolean): DateValue; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | <code>value</code> | [`DateValue`](DateValue) | | | <code>subtract</code> | <code>boolean</code> | _(Optional)_ | **Returns:** [`DateValue`](DateValue)