After Cheese (or A.C.) is a very common form of yearly measurement which takes as the ultimate standard the invention of cheese, which, as every half-drunk cowboy knows, is the basis of the universe under the string theory. A.C. was created by the IAIUA on 0 (zero) A.C., therefore, all After Cheese dates therefore relate to that date. The creation took a long time to catch on, and thus, the date of 0 A.C. is not known anymore. Some astrologers have been pushing for the phrase "C.E." (Cheese Era), as it is apparently more NPOV.