Friday the 13th etc.) of the year. Any month that starts on a Sunday contains a Friday the 13th, and there is at least one Friday the 13th in every calendar year. There can be as many as three Friday the 13ths in a single calendar year; either in February, March and November in a common year starting on Thursday (such as 2009, 2015 or 2026) (D), or January, April and July in a leap year starting on Sunday (such as 2012) (AG). The longest period that occurs without a Friday the 13th is 14 months, either from July to September the following
Friday the 13th motorcycle rally Friday the 13th motorcycle rally The Friday the 13th Motorcycle Rally is a motorcycle rally held every Friday the 13th in Port Dover, Ontario, Canada since 1981. Its typical summer attendance exceeds 100,000 bikers. The event has been described as "the biggest single-day motorcycle event in the world," a title also claimed by the Rolling Thunder rally in the United States. Although hundreds of attendees arrive during winter months, attendance is at its highest when the date falls on a summer day. In August 2010, the rally drew more than 150,000 attendees. Estimates for the July 2012 event ranged from