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

Other days

pumpkin

Pumpkin Day
slime

Slime Day
artists

Artists Day
self appreciation

Self Appreciation Day
ruby

Ruby Day
hoodie

Hoodie Day
boy friend

Boy Friend Day
ormille

Ormille Day
boba

Boba Day
nail polish

Nail Polish Day