Free cookie consent management tool by TermsFeed caladdhours() Function
caladdhours() Function


caladdhours( start_datetime, number, calendar_name )

This function adds a given number of hours to a Date and Time plus any non-working hours (as designated on the process calendar) and returns the resulting Date and Time.


Keyword Type Description


Date and Time

The starting Date and Time.



The number of net work hours to be added to the starting Date and Time.



This optional parameter accepts the name of a system calendar; otherwise, the default calendar is used.


Date and Time

Usage considerations

The function only returns Date and Time values that fall within the working time defined in the process calendar.

It correctly calculates results across daylight saving time boundaries.

If the start_datetime value is a non-working time, adding 0 hours returns the same Date and Time given as the start_datetime; adding 1 or more hours returns the next working time plus that many work hours.

Passing a calendar name allows you to calculate working hours using an alternate system calendar, if you have multiple calendars configured.

See also: Process Calendar Settings


caladdhours(datetime(2011,12,13,12,0,0),12) returns 12/14/2011 4:00 PM GMT +00:00

Feature compatibility

The table below lists this function's compatibility with various features in Appian.
Feature Compatibility Note
Portals Incompatible
Offline Mobile Incompatible
Sync-Time Custom Record Fields Compatible

Can be used to create a custom record field that only evaluates at sync time.

Real-Time Custom Record Fields Incompatible
Process Reports Compatible
Process Events Compatible
Open in Github Built: Thu, Jun 13, 2024 (04:56:33 PM)

caladdhours() Function