---
title: boundaries.yesterday() function
description: >
  `boundaries.yesterday()` returns a record with `start` and `stop` boundary timestamps for yesterday.
menu:
  flux_v0_ref:
    name: boundaries.yesterday
    parent: experimental/date/boundaries
    identifier: experimental/date/boundaries/yesterday
weight: 301
flux/v0/tags: [date/time]
introduced: 0.177.1
---

<!------------------------------------------------------------------------------

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To make updates to this documentation, update the function comments above the
function definition in the Flux source code:

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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md

------------------------------------------------------------------------------->

`boundaries.yesterday()` returns a record with `start` and `stop` boundary timestamps for yesterday.

Yesterday is relative to `now()`.

##### Function type signature

```js
() => {stop: time, start: time}
```

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


## Examples

- [Return start and stop timestamps of yesterday](#return-start-and-stop-timestamps-of-yesterday)
- [Query data from yesterday](#query-data-from-yesterday)

### Return start and stop timestamps of yesterday

```js
import "experimental/date/boundaries"

option now = () => 2022-01-02T13:45:28Z

boundaries.yesterday(

)// Returns {start: 2022-01-01T00:00:00.000000000Z, stop: 2022-01-02T00:00:00.000000000Z}


```


### Query data from yesterday

```js
import "experimental/date/boundaries"

day = boundaries.yesterday()

from(bucket: "example-bucket")
    |> range(start: day.start, stop: day.stop)

```