At Last, How April Fool Came About

1st April came and went and I did not realise its significance. These days, my group of friends and colleagues don't play any April Fool jokes anymore. I never knew how April Fool came about. I got fooled way too many times and fooled way too little people and yet I still did not know how April Fool originated. And I did not bother to find out either until its origins came to me in the form of About: Inventors "April Fool's Day" article:

The History of April Fool's Day
In sixteenth-century France, the start of the new year was observed on April first. It was celebrated in much the same way as it is today with parties and dancing into the late hours of the night.

The First April Fool's Day
Then in 1562, Pope Gregory introduced a new calendar for the Christian world, and the new year fell on January first. There were some people, however, who hadn't heard or didn't believe the change in the date, so they continued to celebrate New Year's Day on April first. Others played tricks on them and called them "April fools." They sent them on a "fool's errand" or tried to make them believe that something false was true.