Random ::Truth Behind April Fool’s Day?::

Ok I decided to try and find out what the history of April Fool's day is.  Surprisingly I found a few explinations for this day.

New Year's Day Moves

Ancient cultures, including those as varied as the Romans and the Hindus, celebrated New Year's Day on or around April 1. It closely follows the vernal equinox (March 20th or March 21st.) In medieval times, much of Europe celebrated March 25, the Feast of Annunciation, as the beginning of the new year.

In 1582, Pope Gregory XIII ordered a new calendar (the Gregorian Calendar) to replace the old Julian Calendar. The new calendar called for New Year's Day to be celebrated Jan. 1. That year, France adopted the reformed calendar and shifted New Year's day to Jan. 1. According to a popular explanation, many people either refused to accept the new date, or did not learn about it, and continued to celebrate New Year's Day on April 1. Other people began to make fun of these traditionalists, sending them on "fool's errands" or trying to trick them into believing something false. Eventually, the practice spread throughout Europe.

Problems With This Explanation

There are at least two difficulties with this explanation. The first is that it doesn't fully account for the spread of April Fools' Day to other European countries. The Gregorian calendar was not adopted by England until 1752, for example, but April Fools' Day was already well established there by that point. The second is that we have no direct historical evidence for this explanation, only conjecture, and that conjecture appears to have been made more recently.

http://www.infoplease.com/spot/aprilfools1.html

The other explination I could find is:

     The Fall of Granada, Spain and 1st April – APRIL FOOL

In Spain, after centuries of Muslim rule*, the Moors were
overwhelmed by the Christian Army. However, the Moors were
fortified in their homes. The Christian armies wanted to get rid
of the Muslims somehow. They told the Muslims that they could
leave their homes safely and could take only the necessary things
from their homes. They were told they could sail away in the
ships anchored on the quay side. The Muslims did wonder if this
ploy was a trick. The Muslims were requested to go to the quay
side to check the ships. They did so and were convinced. They
then made preparations to leave. The next day, 1st April, they
took their essential belongings and walked towards the quay side.

The Christians looted their homes and then set fire to them.
Before the Muslims got to the ships, the Christians had set fire
to the ships as well. The Christians then attacked the Muslims
and killed them all:

Men, women and children. They then celebrated this carnage. This
then became a ritual that was celebrated every year and that has
been carried on until this day not only in Spain but in other
countries, too. The Muslims celebrate 1st April as well as
playing jokes on others on this day through sheer ignorance of
the story. We should bring out the facts of the story to all in
order to put a stop to the practice of celebrating this bloody
and shameful episode.

http://answering-islam.org/Hoaxes/aprilfool.html

When the Muslims ruled Spain, approximately one thousand years ago, they were a force that could not be destroyed. The western Christians wished that they could wipe Islam from the face of the earth, and they succeeded to some extent.

They tried to limit the spread of Islam in Spain and to put an end to it, but they did not succeed. They tried numerous times and never succeeded.

After that, the Christians sent their spies to Spain to study and find out the secret of the Muslims' strength which could not be defeated. They discovered that adhering to taqwa (piety or consciousness of Allah) was the reason.

When the Christians discovered the secret of the Muslims' strength, they started to think of strategies to break this strength. On this basis they began to send wine and cigars to Spain for free.

This tactic on the part of the west produced results, and the faith of the Muslims began to weaken, especially among the young generation in Spain. The result of that was that the western Catholic Christians subdued the whole of Spain and put an end to the Muslim rule of that land which had lasted for more than eight hundred years. The last stronghold of the Muslims, in Grenada, fell on April 1st, hence they considered this to be the "trick of April."

http://ahmed-mohammed.mindswap.net/AprilFools.html

So I guess there really isn't one agreed apon history of how April Fool's day became what it is now.  But I found this search interesting and wanted to share what I found with my readers.