101 lines
2.2 KiB
Markdown
101 lines
2.2 KiB
Markdown
---
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title: date.yearDay() function
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description: >
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`date.yearDay()` returns the day of the year for a specified time.
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Results can include leap days and range from `[1 - 366]`.
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menu:
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flux_v0_ref:
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name: date.yearDay
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parent: date
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identifier: date/yearDay
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weight: 101
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/date/date.flux#L345-L345
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`date.yearDay()` returns the day of the year for a specified time.
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Results can include leap days and range from `[1 - 366]`.
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##### Function type signature
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```js
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(t: A, ?location: {zone: string, offset: duration}) => int where A: Timeable
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```
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{{% caption %}}
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For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
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{{% /caption %}}
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## Parameters
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### t
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({{< req >}})
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Time to operate on.
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Use an absolute time, relative duration, or integer.
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Durations are relative to `now()`.
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### location
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Location used to determine timezone.
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Default is the `location` option.
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## Examples
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- [Return the day of the year for a time value](#return-the-day-of-the-year-for-a-time-value)
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- [Return the day of the year for a relative duration](#return-the-day-of-the-year-for-a-relative-duration)
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- [Return the current day of the year](#return-the-current-day-of-the-year)
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### Return the day of the year for a time value
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```js
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import "date"
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date.yearDay(t: 2020-02-11T12:21:03.29353494Z)// Returns 42
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```
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### Return the day of the year for a relative duration
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```js
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import "date"
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option now = () => 2020-02-11T12:21:03.29353494Z
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date.yearDay(t: -1mo)// Returns 276
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```
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### Return the current day of the year
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```js
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import "date"
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date.yearDay(t: now())
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```
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