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

Other days

stress awareness

Stress Awareness Day
pampering

Pampering Day
boba

Boba Day
bounce

Bounce Day
stud

Stud Day
ride the wind

Ride The Wind Day
self appreciation

Self Appreciation Day
gum

Gum Day
singles

Singles Day
china

China Day