The official Anniversary for The Colbert Report is October 17th each year. The show was first broadcast on October 17 2005.
The Colbert Report celebrated it's first year anniversary on October 17 2006. To commemorate this auspicious occasion, Stephen Colbert unveiled a new painting of himself. He added that in the future colberologists would be able to calculate the number of anniversaries by the number of Stephens in the painting. The old painting, which did not feature Stephen's hands was auctioned at eBay, within the first six hours reaching an unbelievable but truthy $100,000,000 bid price.