Oops, it doesn't look like 'i like my self day' is a national day..

Other days

nae nae

Nae Nae Day
youth

Youth Day
boba

Boba Day
china

China Day
self care

Self Care Day
tulip

Tulip Day
azonto is acceptable

Azonto Is Acceptable Day
offer

Offer Day
hannah

Hannah Day
donate your hair

Donate Your Hair Day