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

Other days

boyfriend

Boyfriend Day
bow tie

Bow Tie Day
youth

Youth Day
ruby

Ruby Day
cursing

Cursing Day
bounce

Bounce Day
gum

Gum Day
hot chocolate

Hot Chocolate Day
nae nae

Nae Nae Day
promposal

Promposal Day