Microsoft Outlook has a built-in feature to add holidays from different countries and religions to your default Calendar folder. You do not need to go into Calendar Options to open the Add Holidays dialog.įor more information and links to updated holiday lists for older versions of Outlook, see Missing Holidays on our Outlook-Tips website. The Outlook Tips file is also easier to use: download then double click on the HOL. This update contains a HOL file identical to the HOL file available on Outlook Tips. Unfortunately, it does a version check and only works with Outlook 2007 SP2 or SP3. This list is identical to the Outlook 2010 holidays (and to the Outlook-Tips file) and contains dates through 2020/2028. Additionally, Microsoft released an updated holiday list for Outlook 2007.