Found this cool tidbit of information. 
April Fools Day rules dating back to at least the 1700s dictate that you absolutely can’t delay your joke until after noon. Anyone telling pranks after noon is considered ‘fools’ themselves because they don’t know the rules, or have failed to acknowledge them. Nobody actually knows why there is a joke deadline for April Fools Day but it is thought to date back to a French calendar switch-over back in the 1500s.
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Was wondering when I would hear from you guys again…
This sounds interesting.
So looking forward to this year, The Entelect Challenge is a pretty nice experience.
Will be hard to stay among the finalists. Last year raised the standards a lot.