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

Other days

offer

Offer Day
cat girl

Cat Girl Day
boy friend

Boy Friend Day
ask out your crush

Ask Out Your Crush Day
gum

Gum Day
chocolate milkshake

Chocolate Milkshake Day
ormille

Ormille Day
artists

Artists Day
reading

Reading Day
cursing

Cursing Day