---
title: timeShift() function
description: timeShift() adds a fixed duration to time columns.
url: https://docs.influxdata.com/flux/v0/stdlib/universe/timeshift/
estimated_tokens: 2073
product: Flux
version: v0
---

# timeShift() function

-   Flux 0.7.0+
-   View InfluxDB support

`timeShift()` adds a fixed duration to time columns.

The output table schema is the same as the input table schema. `null` time values remain `null`.

##### Function type signature

```js
(<-tables: stream[A], duration: duration, ?columns: [string]) => stream[A]
```

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

## Parameters

### duration

(Required) Amount of time to add to each time value. May be a negative duration.

### columns

List of time columns to operate on. Default is `["_start", "_stop", "_time"]`.

### tables

Input data. Default is piped-forward data (`<-`).

## Examples

-   [Shift timestamps forward in time](#shift-timestamps-forward-in-time)
-   [Shift timestamps backward in time](#shift-timestamps-backward-in-time)

### Shift timestamps forward in time

```js
import "sampledata"

sampledata.int()
    |> timeShift(duration: 12h)
```

[](#view-example-input-and-output)

View example input and output

#### Input data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | -2 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | -3 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Output data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T12:00:00Z | -2 | t1 |
| 2021-01-01T12:00:10Z | 10 | t1 |
| 2021-01-01T12:00:20Z | 7 | t1 |
| 2021-01-01T12:00:30Z | 17 | t1 |
| 2021-01-01T12:00:40Z | 15 | t1 |
| 2021-01-01T12:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T12:00:00Z | 19 | t2 |
| 2021-01-01T12:00:10Z | 4 | t2 |
| 2021-01-01T12:00:20Z | -3 | t2 |
| 2021-01-01T12:00:30Z | 19 | t2 |
| 2021-01-01T12:00:40Z | 13 | t2 |
| 2021-01-01T12:00:50Z | 1 | t2 |

### Shift timestamps backward in time

```js
import "sampledata"

sampledata.int()
    |> timeShift(duration: -12h)
```

[](#view-example-input-and-output)

View example input and output

#### Input data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | -2 | t1 |
| 2021-01-01T00:00:10Z | 10 | t1 |
| 2021-01-01T00:00:20Z | 7 | t1 |
| 2021-01-01T00:00:30Z | 17 | t1 |
| 2021-01-01T00:00:40Z | 15 | t1 |
| 2021-01-01T00:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | 19 | t2 |
| 2021-01-01T00:00:10Z | 4 | t2 |
| 2021-01-01T00:00:20Z | -3 | t2 |
| 2021-01-01T00:00:30Z | 19 | t2 |
| 2021-01-01T00:00:40Z | 13 | t2 |
| 2021-01-01T00:00:50Z | 1 | t2 |

#### Output data

| _time | _value | *tag |
| --- | --- | --- |
| 2020-12-31T12:00:00Z | -2 | t1 |
| 2020-12-31T12:00:10Z | 10 | t1 |
| 2020-12-31T12:00:20Z | 7 | t1 |
| 2020-12-31T12:00:30Z | 17 | t1 |
| 2020-12-31T12:00:40Z | 15 | t1 |
| 2020-12-31T12:00:50Z | 4 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2020-12-31T12:00:00Z | 19 | t2 |
| 2020-12-31T12:00:10Z | 4 | t2 |
| 2020-12-31T12:00:20Z | -3 | t2 |
| 2020-12-31T12:00:30Z | 19 | t2 |
| 2020-12-31T12:00:40Z | 13 | t2 |
| 2020-12-31T12:00:50Z | 1 | t2 |

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