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

Other days

pampering

Pampering Day
self care

Self Care Day
chocolate milkshake

Chocolate Milkshake Day
lash

Lash Day
pick me

Pick Me Day
artists

Artists Day
stud

Stud Day
self appreciation

Self Appreciation Day
boy friend

Boy Friend Day
hiv awareness

Hiv Awareness Day