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

Other days

hannah

Hannah Day
reading

Reading Day
bonang

Bonang Day
boy friend

Boy Friend Day
artists

Artists Day
singles

Singles Day
tulip

Tulip Day
chocolate milkshake

Chocolate Milkshake Day
blanket fort

Blanket Fort Day
slime

Slime Day