Rock Your Socks Celebrations throughout Canada! The week leading up to World Down Syndrome Day and on March 21, classrooms, workplaces and other groups are encouraged to wear mismatched, fun socks and take a break to dance in recognition of March 21, known as #DanceOn321, #RockYourSocks and #LotsofSocks. Celebration kits were sent out to over 20,000 children across Canada to get thousands involved with World Down Syndrome Day!