The Canadian Writers' Contest Calendar
If you think that you'd ever have time to write and still know where to find all this information, collect it, and organize it, let me know. There are over 400 database lines to confirm each year, some found very few other places. Anyone who says they could compile all of this on their own, has never tried to do it.
See this page for the most recent year available and for pre-publication specials available between August and October 15th annually for the next year's edition. 2016 now available as an ebook.