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now() function

content/flux/v0/stdlib/universe/now.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/universe/universe.flux#L43-L43 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

now() is a function option that, by default, returns the current system time.

now() vs system.time()

now() returns the current system time (UTC). now() is cached at runtime, so all executions of now() in a Flux script return the same time value. system.time() returns the system time (UTC) at which system.time() is executed. Each instance of system.time() in a Flux script returns a unique value.

Function type signature
js
() => time

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Examples

Use the current UTC time as a query boundary

js
data
    |> range(start: -10h, stop: now())

Define a custom now time

js
option now = () => 2022-01-01T00:00:00Z