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

Other days

kale

Kale Day
bonang

Bonang Day
hiv awareness

Hiv Awareness Day
gallery

Gallery Day
my little pony

My Little Pony Day
boy friend

Boy Friend Day
pumpkin

Pumpkin Day
ask out your crush

Ask Out Your Crush Day
azonto is acceptable

Azonto Is Acceptable Day
tell ur crush you like them

Tell Ur Crush You Like Them Day