---
title: experimental.addDuration() function
description: experimental.addDuration() adds a duration to a time value and returns the resulting time value.
url: https://docs.influxdata.com/flux/v0/stdlib/experimental/addduration/
estimated_tokens: 482
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/stdlib/experimental/addduration/
date: '2024-04-08T16:01:02-06:00'
lastmod: '2024-04-08T16:01:02-06:00'
---

* Flux 0.39.0 – 0.162.0

InfluxDB support

> [!Important]
> `experimental.addDuration()` is [subject to change at any time](/flux/v0/stdlib/experimental/#experimental-packages-are-subject-to-change).

`experimental.addDuration()` adds a duration to a time value and returns the resulting time value.

#### Deprecated

`experimental.addDuration()` is deprecated in favor of [`date.add()`](/flux/v0/stdlib/date/add/).

##### Function type signature

```js
(d: duration, to: A, ?location: {zone: string, offset: duration}) => time where A: Timeable
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### d

(Required)
Duration to add.

### to

(Required)
Time to add the duration to.

### location

Location to use for the time value.

Use an absolute time or a relative duration.
Durations are relative to `now()`.

## Examples

* [Add six hours to a timestamp](#add-six-hours-to-a-timestamp)
* [Add one month to yesterday](#add-one-month-to-yesterday)
* [Add six hours to a relative duration](#add-six-hours-to-a-relative-duration)

### Add six hours to a timestamp

```
import "experimental"

experimental.addDuration(d: 6h, to: 2019-09-16T12:00:00Z)// Returns 2019-09-16T18:00:00.000000000Z

```

### Add one month to yesterday

A time may be represented as either an explicit timestamp
or as a relative time from the current `now` time. addDuration can
support either type of value.

```
import "experimental"

option now = () => 2021-12-10T16:27:40Z

experimental.addDuration(d: 1mo, to: -1d)// Returns 2022-01-09T16:27:40Z

```

### Add six hours to a relative duration

```
import "experimental"

option now = () => 2022-01-01T12:00:00Z

experimental.addDuration(d: 6h, to: 3h)// Returns 2022-01-01T21:00:00.000000000Z

```

#### Related

* [experimental.subDuration() function](/flux/v0/stdlib/experimental/subduration/)

[date/time](/flux/v0/tags/date/time/)