Oops, it doesn't look like 'campaign launch day' is a national day..

Other days

hoodie

Hoodie Day
boy friend

Boy Friend Day
aloxolt

Aloxolt Day
slime

Slime Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day
bow tie

Bow Tie Day
gum

Gum Day
unicorn

Unicorn Day
boyfriend

Boyfriend Day