Actually yes, Outlook comes with a holiday file in text format which is easy
to import. You can also download the updated file from microsoft. I you
search http://www.slipstick.com/index.htm you will find other links to
holiday files for many countries. Search your computer if you have outlook
for Outlook.hol or go to http://support.microsoft.com/kb/924423 and read.
Search using google, there is thousands of import files for this. But then
again how many holidays are there in an year. You could type them in after
about five minutes with two thumbs and a finger.