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

Other days

boba

Boba Day
first love

First Love Day
believe

Believe Day
me

Me Day
self care

Self Care Day
donate your hair

Donate Your Hair Day
lumpy rug

Lumpy Rug Day
unicorn

Unicorn Day
self appreciation

Self Appreciation Day
youth

Youth Day