The time when the lustrum took place has been calculated. The affair is also depicted in the novel "Lustrum" by Robert Harris. Some scholars extrapolate that like the "lustrum" (purification ritual), the "Ludi Taurii" were regularly quinquennial. However, Triton was allowed to organise the Varsity in 1941 as part of their lustrum. In 2017 the association celebrated its 11th lustrum. The two censors were relatively liberal in their "lustrum" and degraded none. A lustrum (, plural lustra) was a term for a five-year period in Ancient Rome. The second volume, "Lustrum", was published in October 2009. The second novel in the Cicero trilogy, "Lustrum", was published in October 2009. Clark discusses his techniques in the book "Darkroom", published in 1977 by Lustrum Press. In 2015, Vindicat celebrated its 200th anniversary with its 40th lustrum festival. Lustrum (plural lustra) was a term for a five-year period in Ancient Rome. "Dictator" follows the first novel "Imperium" (2006) and the second novel "Lustrum" (2009). The same year, Quinctius held a lustrum to mark the end of a census. Nereus celebrated its 26th lustrum on its 130th dies natalis on December 11, 2015.