If you are using a version of Microsoft Outlook which is older than Outlook 2007, then you can download a file which updates all public holiday information in your calendar, giving you details of public holidays through till 2012.

Visit the information page at http://www.outlook-tips.net/howto/missinghol.htm and download and install the file which resides at http://www.outlook-tips.net/files/OUTLOOK2012.HOL if you are running Outlook 2002/2003.

I now have an up-to-date Outlook file which gives me the heads up on all public holidays right through to 2012.