Obtain the difference between two dates

Use case

Update a number field with the difference in days between two dates obtained from two Date Picker fields.

Prerequisites

Set up the custom field

Create a Number custom field

Name: Time Difference

Add it to the screens of your choice.

Configuration

Add the post function Update fields to the transition of your choice.

Target issue*

Select current issue

Fields

Field*

Select Time Difference, the field previously created

Value*

Select Set field value manually (parser expression) and enter the following expression with the expression editor in Jira expression mode:

((new Date(issue?.customfield_10043  + "T00:00:00").getTime() - new Date(issue?.customfield_10040 + "T00:00:00").getTime())) / 1000 / 60 / 60 /24

Replace the field codes of the expression with the ones of your Date Picker fields.

With the current configuration, this expression will return the number of days between the first date and the second one. In order to display the number of hours, remove /24 from the expression.

Variation

If you prefer to use our parsing mode, you can set the expression editor to General mode and create an expression as follows:

%{({issue.cf10001}-{issue.cf10002})/1000 /60 /60 /24}

Do not forget to surround the operation with an additional %{}

Related use cases

Use case	Workflow function	Parser functions
Add a sub-task's summary and key to the description of its parent	Update fields
Add three days skipping weekends automatically to a Date Picker	Update fields	dateTimeToString() dayOfTheWeek() addDays()
Add watchers from another field	Update fields Transition issue	union() toStringList()
Assign an issue to the project lead, if the issue is unassigned on creation	Update fields
Assign an issue to the user who last commented on it	Update fields
Assign important issues to the project lead	Update fields
Copy field values from epic to issues under it after creation	Update fields Transition issue	epic() issuesUnderEpic() filterByStatus()
Copy labels of a sub-task to the parent issue upon closing	Update fields
Keep parent's priority in sync	Update fields
Obtain the difference between two dates	Update fields
Set a date field to a future date	Update fields	dateTimeToString()
Set a date field to the current date	Update fields	dateTimeToString()
Set Fix version to Affects version when resolving an issue	Update fields
Set the priority to Highest if the 'Infrastructure' component is selected	Update fields

If you still have questions, feel free to refer to our support team.

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