I have heard that there is a rally in Port Dover Ontario on every Friday the 13th.
I'd bet that wouldn't happen if it were cold or raining though.
I'd like to check it out someday, but I would not ride my Harley as it would be way to far to ride. I am at least 100 miles from Port Dover (in Michigan) and even the thought of a border crossing on a motorcycle is enough to prevent this excursion.
Although, maybe a few of my friends and I could carpool it on a nice sunny weekend.