After setting up company Work Calendars in Celoxis, one should set up the Company Holidays for the different work calendars. Celoxis schedules tasks around company holidays. For instance, assuming that 25th December is a holiday for Christmas, a task scheduled to start on 24th December of duration 2 days will finish on the 26th and not on the 25th.

Celoxis allows you to set your holidays as Work Calendar Exceptions. Company holidays can be setup for specific Work Calendars or across all Work Calendars.

To add a Company Holiday:

Login with a user with administrator privileges and click on Administration option under the user profile.
Under the Project Management section, click on Work Calendars.
Navigate to the Exceptions tab.
Click Add.
From the For drop-down, select 'Everyone'.
In the Summary box, type the name of your Holiday.
From the Impacts Scheduling drop-down list select option - Non working.
From the date picker select a date. You can create the event for a whole day or for a specific time (un-check the All Day checkbox and select the From and To dates).
Select the check box Time zone independent if you want the holiday to be on that specific date, regardless of the time zone.
From the Repeat tab, select an appropriate option.
Click Submit. The exception is added.

Browser not supported