Oops, it doesn't look like 'answer the telephone like buddy the elf day' is a national day..

Other days

one

One Day

unicorn

Unicorn Day

eat what you want

Eat What You Want Day

Me Day

donate your hair

Donate Your Hair Day

bow tie

Bow Tie Day

mean girls

Mean Girls Day

first love

First Love Day

tell ur crush you like them

Tell Ur Crush You Like Them Day

prescription drug take back

Prescription Drug Take Back Day