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

Other days

kale

Kale Day
blanket fort

Blanket Fort Day
hiv awareness

Hiv Awareness Day
bonang

Bonang Day
tulip

Tulip Day
bounce

Bounce Day
coffee

Coffee Day
cursing

Cursing Day
ask out your crush

Ask Out Your Crush Day
fiancee

Fiancee Day