addDays()

This function adds or substracts days to/from any given date.

Syntax

addDays(timestamp, numberOfDays, timeZone) #Output: Number

Parser expression	Description
addDays({issue.duedate}, 2, LOCAL)	This function adds 2 days to the issue's due date. If the due date is set to a Monday the function will return a date-time for Wednesday . If the due date is set to a Friday the function will return a date-time for Sunday.
addDays({issue.duedate}, -2, LOCAL)	This function substracts 2 days from the issue's due date. If the due date is set to a Monday the function will return a date-time for Saturday. If the due date is set to a Friday the function will return a date-time for Wednesday.
addDays({issue.cf10100}, -6, USER_LOCAL)	This function substracts 6 days from a custom date-time field (with the ID 10100). Instead of the Jira server's local time this example uses the current user's time zone.

Parameter	Input (data type)	Description
`timestamp`	NUMBER	The parameter must be valid timestamp. Usually this value is retrieved from a field (e.g. due date, created date).
`numberOfDays`	NUMBER	The number defined here will be the offset in days. Negative values are used to substract days. Internally JWT multiplies this value with the time macro `{DAY}` to add full days to the timestamp. Learn more about time macros.
`timeZone`	TIMEZONE	The time zone used for the calculation.

This function returns a NUMBER representing a timestamp.

The output can be written into any Jira field of type Date Picker ore Date Time Picker.

Another very common use case is to use this function in a JWT calculated date-time fields.