To add US holidays to iCal, follow the directions in Basics4Mac: Adding Holidays To Your iCal Calendar. It worked for me in 10.6. You should be able to find Canadian holidays also.

Last edited by jchuzi; 10/06/11 08:10 PM. Reason: forgot that you are Canadian
Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365