ime is a component of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify the motions of objects. Time has been a major subject of religion, philosophy, and science, but defining time in a non-controversial manner applicable to all fields of study has consistently eluded the greatest scholars.--------------4:20 or 4/20 (pronounced four-twenty) is a term used in North America as a discreet way to refer to the consumption of cannabis and, by extension, a way to identify oneself with the drug subculture around cannabis.Although many diverse theories exist to explain the origin of the term, one central root of the phrase stems from a group of teenagers at San Rafael High School in San Rafael, California in 1971; the teens would meet after school at 4:20 p.m. to smoke cannabis at the Louis Pasteur statue. The group was known as "The Waldos" because they would sit against a wall and became popularised in the late 1980s by fans of the Grateful Dead.Many North American cannabis users continue to observe 4:20 as a time to smoke communally. By extension April 20 ("4/20" in U.S. dating shorthand) has evolved into a counterculture holiday, where people gather to celebrate and consume cannabis. In some locations this celebration coincides with Earth Week.-------- * Phrases such as "420 friendly" sometimes appear in roommate advertisements, indicating that the current occupants are tolerant of cannabis users. That phrase is also used in personal ads to denote the same association. * College students frequently bid $420 while in Contestant's Row on The Price is Right. * 420 is the title of a comic book series featuring the alternative superhero Captain Cannabis. * Noting that "the national weed smoking day is 4/20," rapper Method Man named his 2006 album 4:21...The Day After. * The television show "Code Monkeys" frequently makes use of the term, usually in the form of a score whenever Dave gets high. The first episode of Season two aired on April 20th, 2008 (4/20) and was dedicated to the main characters' pursuit of marijuana. Tommy Chong guest-starred. * The song of Bob Dylan "Rainy Day Women No. 12 and 35" is referred to the use of marijuana and the numbers 12 and 35 mean (multiplied) the number 420.