== Germany and Portugal == 

 "Groundhog day is also celebrated in Portchagal and Germany where everyone under the age of 30 dresses up as groundhogs and light fireworks in celebration of the event." 

 Can anyone back this up? I live in Germany and nobody I know here has even heard of Groundhog Day, much less considered dressing up as one... Can't comment on Portugal, but both the Portuguese and German articles list Groundhog Day as a US and Canadian celebration.