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

Other days

reading

Reading Day
self care

Self Care Day
bounce

Bounce Day
frozen yogurt

Frozen Yogurt Day
self appreciation

Self Appreciation Day
lumpy rug

Lumpy Rug Day
believe

Believe Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day
healing

Healing Day