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

Other days

lumpy rug

Lumpy Rug Day
stud

Stud Day
boba

Boba Day
pampering

Pampering Day
hiv awareness

Hiv Awareness Day
pick me

Pick Me Day
brow

Brow Day
ask out your crush

Ask Out Your Crush Day
self care

Self Care Day
hoodie

Hoodie Day