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# addDuration

> Use the addDuration task to add a duration to an existing timestamp and return the adjusted time.

Unlike the `getTime` task (which provides a current system timestamp), the `addDuration` task adds a specified duration to an existing timestamp and returns the adjusted result for continued use in the automation.

## Potential use case

If a date value is provided in a record, use `addDuration` to determine what the timestamp would be after adding additional time. For example, adding six months to a poll record could generate a result such as: *"Last poll occurred on Jan 1; next poll will occur on Jun 1."*

## Properties

### Input variables

| Incoming         | Type   | Description                                                                                                                                                                                                                | Example                                                                                         |
| :--------------- | :----- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------- |
| `inputTime`      | Object | Required. A timestamp from a previous task. Must contain `time` (a string representation of the time) and `formatString` (the [moment.js format](https://momentjs.com/docs/#/displaying/format/) the time must adhere to). | `{ "time": "2023-04-28T01:21:14.052000-1100", "formatString": "YYYY-MM-DDTHH:mm:ss.SSSSSSZZ" }` |
| `offsetDuration` | Object | Required. A duration expressed as object literal notation (e.g., `{"days": 7, "months": 1}`) or as a plain numeric millisecond value.                                                                                      | `{"days": 7, "months": 1}` / `{"hours": 4}` / `31556926000`                                     |

When using object literal notation in `offsetDuration`, you must include the curly braces. Numeric values entered without any other designators are treated as milliseconds by default. See the [moment.js documentation](https://momentjs.com/docs/#/displaying/format/) for more information.

### Output variables

| Outgoing  | Type   | Description                                                                                            |
| :-------- | :----- | :----------------------------------------------------------------------------------------------------- |
| `newTime` | Object | The new time after adding the given duration to `inputTime`. The format is inherited from `inputTime`. |

The `newTime` object inherits the same format as `inputTime`. The `addDuration` task does not provide a mechanism to change the time format.

## Example 1

In this example:

* `inputTime` comes from the `Get time` task with reference variable `time`.
* `offsetDuration` adds four days using object literal notation: `{"days": 4}`.
* If `inputTime` is `"2020-06-01"`, the resulting `newTime` is `"2020-06-05"`.

![](/_fern-img/7afb50b071e58257522b6cf231af99b1f216259ba63be4cbca4130f48a718698.webp)

## Example 2

In this example:

* `inputTime` comes from the `Get time` task with reference variable `time`.
* `offsetDuration` is `86400000` milliseconds (24 hours), entered as a plain numeric value without object literal notation.
* The resulting `newTime` is the `inputTime` plus 24 hours.

![](/_fern-img/75153c1fdc38487fc9b66a275b884195b4c4863920f0df6209e682aded289458.webp)

## Example 3

In this example:

* `inputTime` comes from the `Get time` task with reference variable `time`.
* `offsetDuration` adds four hours and six months using object literal notation: `{"hours": 4, "months": 6}`.
* The resulting `newTime` is the `inputTime` plus six months and four hours.

![](/_fern-img/f6a3b81acbac3495091319a9c7f6d06cc0b2d255edd5d304b3b45693967bf2f7.webp)

## Manual reference variable entry (inputTime)

To enter the `inputTime` object manually, use Year-Month-Date-Time format (`"yyyy-MM-dd'T'HH:mm:ss.SSSZ"`):

```json
{"time": "2021-02-26T15:00:00.000Z"}
```

This displays as:

```
2021-02-25 03:00.00
```

## Related reading

* [addDuration API](https://apidocs.itential.com/api/app-workflow_engine/addDuration/)
* [getTime API](https://apidocs.itential.com/api/app-workflow_engine/getTime/)

> Use the addDuration task to add a duration to an existing timestamp and return the adjusted time.