grammar

[alexka]

Which one is correct and why:
April fools' day or
April fool's day
Thanks

 

[probus]

Which one is correct and why:
April fools' day or
April fool's day
Thanks

You see it both ways, and you also see April Fools Day with no apostrophe.

The last is probably the most common at least in North America, and is my personal preference.

 

[Tdol]

It's sometimes called All Fools' Day, which would suggest a plural, though as Probus says, you'll see all three.