Oops, it doesn't look like 'get your tits out for the timeline day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
gum

Gum Day
blanket fort

Blanket Fort Day
promposal

Promposal Day
stress awareness

Stress Awareness Day
carpenters

Carpenters Day
me

Me Day
first love

First Love Day
chocolate milkshake

Chocolate Milkshake Day
bonang

Bonang Day