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

Other days

lash

Lash Day
youth

Youth Day
special education

Special Education Day
nail polish

Nail Polish Day
my little pony

My Little Pony Day
lumpy rug

Lumpy Rug Day
comfy

Comfy Day
bounce

Bounce Day
boba

Boba Day
one

One Day