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

Other days

offer

Offer Day

frozen yogurt

Frozen Yogurt Day

artists

Artists Day

cuddle up

Cuddle Up Day

fiancee

Fiancee Day

donate your hair

Donate Your Hair Day

martini

Martini Day

Emoji Day

bow tie

Bow Tie Day

hoodie

Hoodie Day