[laurent92]

I was caught once by that in Spain: Their April Fools is on December 27th, and is called Holy Innocent’s Day.

https://en.wikipedia.org/wiki/April_Fools%27_Day

[happy_path]

December 28th "Día de los inocentes" (Innocent's Day), supposedly the day king Herod commanded the Massacre of the Innocents [1].

[1] https://en.wikipedia.org/wiki/Massacre_of_the_Innocents