Common year starting on Friday has only one Friday the 13th; The only Friday the 13th in this common year occurs in August. Leap years starting on Thursday share this characteristic, but also have another one in February. This is the only year type where the "n"th "Doomsday" (this year Sunday) is not in ISO week "n"; it is in ISO week "n"-1. In the (currently used) Gregorian calendar, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-three common years per cycle or exactly 10.75% start on a Friday. The 28-year sub-cycle does only span across century
Friday 13th (EP) other three tracks, "Billy Bad Breaks" and "Limit Club", were composed by the band; the final track was a cover version of The Rolling Stones song "Citadel". All songs written by Scabies, Sensible, Gray, Vanian, except "Citadel". Friday 13th (EP) Friday 13th EP is a four-track EP by English rock band the Damned, issued as the result of a one-off deal with the NEMS Records label. It was released on 13 November 1981, which fell on a Friday. The EP was released in the UK and Sweden on 7" vinyl, and also in Germany on 12" vinyl. In 1981, EPs