“You can’t replace the holidays, the birthdays they are now missing because. very long pregnancy (she was due in mid-February and giraffes gestate for about 15 months) is that it’s all an elaborate April Fools’ joke. SEE ALSO: People are trolling the giraffe birth livestream by saying giraffes lay eggs With the. April Fools’ Day. Canadian Thanksgiving: For the same day, Oct. 8, here’s how the Canadian holiday differs from…