Oops, it doesn't look like 'drink old style and root on the cubs day' is a national day..

Other days

stress awareness

Stress Awareness Day
offer

Offer Day
promposal

Promposal Day
self appreciation

Self Appreciation Day
hiv awareness

Hiv Awareness Day
nae nae

Nae Nae Day
youth

Youth Day
bow tie

Bow Tie Day
my little pony

My Little Pony Day
azonto is acceptable

Azonto Is Acceptable Day