When do you celebrate April Fools?

[againsttheflow]

In Colombia for example, they have the "day of the innocents" on December 28. April first is all over the internet but when does your country "celebrate" it?

 

[GenMarshall]

I never celebrate it. It's an immature "holiday".

 

[Ansar]

I only celebrate it on Off-Topic as everywhere else, the jokes are rather boring and stupid.

 

[bardolph]

Immature, yes, but oh so fun. My office had a new hire today, and the office manager showed him to his desk which was set up in a closet!

 

[againsttheflow]

To clarify, the question is not whether or not you celebrate, but when day does your country have as fools day.