Add holidays to the calendar
When you first use Outlook 2013, there aren’t any holidays on the Calendar. But fear not, you can add holidays for one or more countries.
Click File > Options > Calendar.
Under Calendar options, click Add Holidays.
Check the box for each country whose holidays you want to add to your calendar, and then click OK.
If a country's or region's holidays are already added to your calendar, the box for the country is checked in the Add Holidays to Calendar dialog box. If you click OK, the holidays are added and duplicates are created.
Note The holiday information that’s provided with Outlook 2013 includes Gregorian calendar years 2012 through 2022. If you’re using a non-Gregorian calendar, holidays that occur during the same time period are included.
Delete holidays and events
In Calendar, click View > Change View > List.
Select the holidays you want to delete. To select multiple rows, press the Ctrl key, and then click the Calendar icon to select more rows.
Click Home > Delete.
Tip To quickly delete all of the holidays for a country, click the Location column heading to sort the list of events so all of the holidays for a country are grouped together.
My holidays are missing
If you’ve been using Outlook for a few years, your calendar may be missing holidays for 2013 and beyond. Follow the steps above to add holidays.
Note If you see a message that says holidays are already installed and asks if you want to install them again, click Yes.