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

Other days

self appreciation

Self Appreciation Day
camera

Camera Day
nae nae

Nae Nae Day
lumpy rug

Lumpy Rug Day
cursing

Cursing Day
ormille

Ormille Day
blanket fort

Blanket Fort Day
china

China Day
singles

Singles Day
offer

Offer Day