COVERT CLICKER
Secretly control TVs, anywhere, any time! This device is so small it is easily concealed in your pocket.
FAKE PARKING TICKETS
Slap one on the windshield of rude parkers, co-workers, neighbors or who ever and they will think they received a real parking ticket until they read the offense.

FM
The April Fool's Day Database
A catalog of April Fool's Day hoaxes, pranks, and related events throughout history, categorized by year and theme.

Years Archived:
2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | 1989 | 1988 | 1987 | 1986 | 1985 | 1984 | 1983 | 1982 | 1981 | 1980 | 1979 | 1978 | 1977 | 1976 | 1975 | 1974 | 1973 | 1972 | 1971 | 1970 | 1969 | 1965 | 1962 | 1960 | 1959 | 1957 | 1950 | 1949 | 1940 | 1938 | 1937 | 1936 | 1934 | 1933 | 1925 | 1923 | 1920 | 1919 | 1915 | 1901 | 1900 | 1899-1800 | 1799-1700 | Before 1700 | Undated
category
Time and Date-Themed April Fool's Day Hoaxes
Bolivia Forced to Adopt Daylight Savings Time (2009)
The Democracy Center, an organization founded to advance global social justice, posted on its website that Bolivian President Evo Morales had accused the United States of engaging in a clandestine effort to force Bolivia to adopt Daylight Savings Time. The article quoted Morales as saying, "We have seen the government of the U.S. try to undermine our democracy, block us from the lawful export of coca products, and smuggle in munitions. But now we see that these conspirators also have their sights set on changing our clocks. We denounce this before the world community." The news was initially reposted as fact by a few blogs, including the Huffington Post, before it was identified as an April Fool's Day joke.
gDay Mate (2008)
Google Australia debuted gDay technology "enabling you to search content on the internet before it is created":

The core technology that powers gDay™ is MATE™ (Machine Automated Temporal Extrapolation). Using MATE's™ machine learning and artificial intelligence techniques developed in Google's Sydney offices, we can construct elements of the future. Google spiders crawl publicly available web information and our index of historic, cached web content. Using a mashup of numerous factors such as recurrence plots, fuzzy measure analysis, online betting odds and the weather forecast from the iGoogle weather gadget, we can create a sophisticated model of what the internet will look like 24 hours from now. We can use this technique to predict almost anything on the web – tomorrow's share price movements, sports results or news events. Plus, using language regression analysis, Google can even predict the actual wording of blogs and newspaper columns, 24 hours before they're written!
Day Lost to Stronger Trade Winds (2004)
Nature.com reported a startling discovery made by astronomers. The increasing force of trade winds had slightly accelerated the spin of the Earth. As a consequence the length of the day had decreased over the past century, meaning that the calendar was now inaccurate: "Just as February has an extra day in leap years, we conclude that March ought to have 30 days once every 100 years, not 31… If we start the adjustments this year we should be back on track." In other words, "today should be 2 April, not 1 April."
Guinness Mean Time (1998)
On March 30 Guinness issued a press release announcing that it had reached an agreement with the Old Royal Observatory in Greenwich, England to be the official beer sponsor of the Observatory's millennium celebration. According to this agreement, Greenwich Mean Time would be renamed Guinness Mean Time until the end of 1999. In addition, where the Observatory traditionally counted seconds in "pips," it would now count them in "pint drips." Finally, a Guinness bar would open in the astronomy dome and the Observatory's official millennium countdown would feature a Guinness clock counting "pint settling time" with a two-minute stopwatch.

Guinness issued the announcement as an embargoed release, meaning that reporters who received the release were not supposed to write about it until the day it was issued to the public on April 1. Nevertheless, the Financial Times, not realizing that the release was a joke, broke the embargo and discussed the announcement a day early in an article about how some companies were exploiting the millennium excitement to promote their brand names. It declared that Guinness, with its Greenwich tie-in, was setting a "brash tone for the millennium." When the Financial Times learned it had fallen for a joke, it printed a curt retraction, stating that the news it had disclosed "was apparently intended as part of an April 1 spoof." Guinness spokesman Roy Mantle said, "The best thing to say is that they pipped everybody to the post and we were very pleased to see that actually in such an august organ as the Financial Times." In a separate statement Guinness took a more charitable tone, explaining that "The Financial Times was running a perfectly serious business piece and Guinness faxed over the spoof among other information. It wasn't really his [the reporter's] fault."
Daylight Savings Contest (1984)
The Eldorado Daily Journal, an Illinois paper, announced a contest to see who could save the most daylight for daylight savings time. The rules of the contest were simple: beginning with the first day of daylight savings time, contestants would be required to save daylight. Whoever succeeded in saving the most daylight would win. Only pure daylight would be allowed—no dawn or twilight light, though light from cloudy days would be allowed. Moonlight was strictly forbidden. Light could be stored in any container. The contest received a huge, nationwide response. The paper's editor was interviewed by correspondents from CBS and NBC and was featured in papers throughout the country.
Big Ben Goes Digital (1980)
The British Broadcasting Corp. reported that Big Ben was going to be given a digital readout. It received a huge response from listeners protesting the change. The BBC Japanese service also announced that the clock hands would be sold to the first four listeners to contact them, and one Japanese seaman in the mid-Atlantic immediately radioed in a bid.
Operation Parallax (1979)
Capital Radio, a London radio station, announced that Operation Parallax would soon go into effect. This was a government plan to resynchronize the British calendar with the rest of the world. It was explained that ever since 1945 Britain had gradually become 48 hours ahead of all other countries because of the constant switching back and forth from British Summer Time. To remedy this situation, the British government had decided to cancel April 5 and 12 that year. Capital Radio received numerous calls as a result of this announcement. One employer wanted to know if she had to pay her employees for the missing days. Another woman was curious about what would happen to her birthday, which fell on one of the cancelled days.
Metric Time (1975)
Australia's This Day Tonight revealed that the country would soon be converting to "metric time." Under the new system there would be 100 seconds to the minute, 100 minutes to the hour, and 20-hour days. Furthermore, seconds would become millidays, minutes become centidays, and hours become decidays. The report included an interview with Deputy Premier Des Corcoran who (participating in the prank) praised the new time system. The Adelaide townhall was shown sporting a new 10-hour metric clock face. The show received numerous calls from viewers who fell for the hoax. One caller wanted to know how he could convert his newly purchased digital clock to metric time. [Source: Talking TelevisionAU]
French Calendar Reform (1563)
In 1563 King Charles IX reformed the French calendar by moving the start of the year from Easter Day to January 1. His edict was passed into law by the French Parliament on Dec. 22, 1564. This aligned legal convention with what had long been the popular custom of celebrating the start of the year on January 1.

Later, in 1582, Pope Gregory issued a papal bull decreeing sweeping calendar reform, which included moving the start of the year to January 1, as well as creating a leap-year system and eliminating ten days from the month of October 1582 in order to correct the drift of the calendar. The Pope had no formal power to make governments accept this reform, but he urged Christian nations to do so. France immediately accepted the reform, since it had already instituted part of the reform (changing the start of the year) in 1564.

This sixteenth-century calendar reform is frequently cited as the origin of the custom of April Foolery. Supposedly the people who failed to realize the start of the year had been changed had pranks played on them on April 1st.

There are a number of problems with this theory. First, the start of the year was changed from Easter day, not April 1st. Second, January 1st had, since Roman times, been the traditional start of the year anyway. Easter Day had been used as the start of the year primarily for legal and administrative purposes (in an attempt by medieval rulers to christianize the calendar).

The calendar-change hypothesis is more plausible if applied to Britain, where March 25 (the date of the christian Feast of Annunciation, aka Lady Day) was New Year's Day, followed by a week of festivities culminating on April 1. However, Britain only changed the start of its calendar year to January 1 in 1752, by which time April Fool's Day was already a well-established tradition.
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