Oops, it doesn't look like 'snake ice cream day' is a national day..

Other days

one

One Day
bounce

Bounce Day
bow tie

Bow Tie Day
reading

Reading Day
boba

Boba Day
aloxolt

Aloxolt Day
tulip

Tulip Day
kale

Kale Day
hiv awareness

Hiv Awareness Day
ask out your crush

Ask Out Your Crush Day