date.sub() function

date.sub() subtracts a duration from a time value and returns the resulting time value.

Function type signature
(d: duration, from: A, ?location: {zone: string, offset: duration}) => time where A: Timeable
For more information, see Function type signatures.



(Required) Time to subtract the duration from.

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


(Required) Duration to subtract.


Location to use for the time value.


Subtract six hours from a timestamp

import "date"

date.sub(from: 2019-09-16T12:00:00Z, d: 6h)// Returns 2019-09-16T06:00:00.000000000Z

Subtract six hours from a relative duration

import "date"

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

date.sub(d: 6h, from: -3h)// Returns 2022-01-01T03:00:00.000000000Z

Subtract two days from one hour ago

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

import "date"

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

date.sub(from: -1h, d: 2d)// Returns 2021-12-08T15:27:40Z

Was this page helpful?

Thank you for your feedback!

Linux Package Signing Key Rotation

All signed InfluxData Linux packages have been resigned with an updated key. If using Linux, you may need to update your package configuration to continue to download and verify InfluxData software packages.

For more information, see the Linux Package Signing Key Rotation blog post.